Manual de PHP

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Manual de PHP
Stig Sæther Bakken
Alexander Aulbach
Egon Schmid
Jim Winstead
Lars Torben Wilson
Rasmus Lerdorf
Andrei Zmievski
Jouni Ahto
Editado por
Rafael Martínez (Coordinador)
Víctor Fernández
Leonardo Boshell
08-07-2002
Copyright © 1997, 1998, 1999, 2000, 2001, 2002 por por el Grupo de
documentación de PHP
Copyright
Este manual es © Copyright 1997, 1998, 1999, 2000, 2001, 2002 por el Grupo de
documentación de PHP. Los miembros de este grupo se encuentran listados en la
primera página de este manual.
Este manual puede ser redistribuido bajo los términos de la "GNU General Public
License" publicada por la "Free Software Foundation"; tanto bajo la versión 2 de
esta licencia o bajo versiones posteriores.
La sección ’Extendiendo PHP 4.0’ de este manual es copyright © 2000 por Zend
Technologies, Ltd. Este material puede ser distribuido solamente bajo los
terminos y condiciones de la Open Publication License, v1.0 ó posterior (la última
versión está disponible en http://www.opencontent.org/openpub/).
Manual de PHP
por Stig Sæther Bakken, Alexander Aulbach, Egon Schmid, Jim Winstead, Lars Torben Wilson, Rasmus Lerdorf,
Andrei Zmievski, y Jouni Ahto
por
Editado por Rafael Martínez (Coordinador)
Editado por Víctor Fernández
Editado por Leonardo Boshell
Publicado 08-07-2002
Copyright © 1997, 1998, 1999, 2000, 2001, 2002 por por el Grupo de documentación de PHP
Copyright
Este manual es © Copyright 1997, 1998, 1999, 2000, 2001, 2002 por el Grupo de documentación de PHP. Los
miembros de este grupo se encuentran listados en la primera página de este manual.
Este manual puede ser redistribuido bajo los términos de la "GNU General Public License" publicada por la "Free
Software Foundation"; tanto bajo la versión 2 de esta licencia o bajo versiones posteriores.
La sección ’Extendiendo PHP 4.0’ de este manual es copyright © 2000 por Zend Technologies, Ltd. Este material
puede ser distribuido solamente bajo los terminos y condiciones de la Open Publication License, v1.0 ó posterior (la
última versión está disponible en http://www.opencontent.org/openpub/).
Tabla de contenidos
Prefacio........................................................................................................................................................i
I. Conceptos Básicos..................................................................................................................................1
1. Introducción...................................................................................................................................1
Qué es PHP?.............................................................................................................................2
Qué se puede hacer con PHP?..................................................................................................2
2. Instalación......................................................................................................................................5
Bajándose la última versión......................................................................................................6
Instalación en sistemas UNIX..................................................................................................6
Instrucciones Rápidas de Instalación (Versión Módulo de Apache)..............................6
Configuración..................................................................................................................7
Módulo del Apache.........................................................................................................7
Módulo fhttpd.................................................................................................................7
CGI version.....................................................................................................................7
Opciones de soporte para Base de Datos........................................................................8
Adabas D...............................................................................................................8
dBase.....................................................................................................................8
filePro....................................................................................................................8
mSQL....................................................................................................................8
MySQL..................................................................................................................9
iODBC...................................................................................................................9
OpenLink ODBC...................................................................................................9
Oracle....................................................................................................................9
PostgreSQL...........................................................................................................9
Solid ....................................................................................................................10
Sybase..................................................................................................................10
Sybase-CT...........................................................................................................10
Velocis.................................................................................................................10
Una librería a medida de ODBC.........................................................................11
ODBC Unificado.................................................................................................11
LDAP...................................................................................................................11
Otras opciones de configuración...................................................................................11
--with-mcrypt=DIR .............................................................................................12
--enable-sysvsem.................................................................................................12
--enable-sysvshm.................................................................................................12
--with-xml............................................................................................................12
--enable-maintainer-mode...................................................................................12
--with-system-regex.............................................................................................12
--with-config-file-path.........................................................................................13
--with-exec-dir.....................................................................................................13
--enable-debug.....................................................................................................13
--enable-safe-mode..............................................................................................13
--enable-track-vars...............................................................................................13
--enable-magic-quotes.........................................................................................14
--enable-debugger................................................................................................14
--enable-discard-path...........................................................................................14
iv
--enable-bcmath...................................................................................................14
--enable-force-cgi-redirect..................................................................................14
--disable-short-tags..............................................................................................15
--enable-url-includes...........................................................................................15--disable-syntax-hl...............................................................................................15
CPPFLAGS y LDFLAGS...................................................................................15
Construyendo................................................................................................................16
Probando.......................................................................................................................16
Comprobando la velocidad...........................................................................................16
Instalación en sistemas Windows 95/98/NT...........................................................................16
Pasos Generales de Instalación.....................................................................................16
Windows 95/98/NT y PWS/IIS 3..................................................................................17
Windows NT e IIS 4.....................................................................................................18
Windows 9x/NT y Apache 1.3.x...................................................................................19
Omni HTTPd 2.0b1 para Windows..............................................................................19
Módulos del PHP..........................................................................................................19
¿Problemas?............................................................................................................................20
Lea las PMF (FAQ).......................................................................................................20
Informes de error...........................................................................................................20
Otros problemas............................................................................................................20
3. Configuración...............................................................................................................................22
El archivo de configuración....................................................................................................23
Directivas Generales de Configuración.........................................................................23
Directivas de Configuración de Correo.........................................................................27
Directivas de Configuración de Modo Seguro..............................................................28
Directivas de Configuración del Debugger...................................................................28
Directivas de Carga de Extensiones..............................................................................28
Directivas de Configuración de MySQL.......................................................................29
Directivas de Configuración de mSQL.........................................................................29
Directivas de Configuración de Postgres......................................................................29
SESAM Configuration Directives.................................................................................30
Directivas de Configuración de Sybase........................................................................30
Directivas de Configuración de Sybase-CT..................................................................31
Directivas de Configuración de Informix......................................................................32
Directivas de Configuración de Matemática BC...........................................................33
Directivas de Configuración de Capacidades de los Navegadores................................33
Directivas Unificadas de Configuración de ODBC.......................................................33
4. Seguridad......................................................................................................................................35
Binarios CGI...........................................................................................................................36
Posibles ataques............................................................................................................36
Caso 1: solamente se sirven ficheros publicos..............................................................37
Caso 2: usando --enable-force-cgi-redirect...................................................................37
Caso 3: Usando doc_root or user_dir............................................................................37
Caso 4: Analizador PHP fuera del arbol web...............................................................38
Modulo Apache......................................................................................................................38
v
II. Referencia del Lenguaje.....................................................................................................................40
5. Síntaxis básica..............................................................................................................................40
Saliendo de HTML.................................................................................................................41
Separación de instrucciones...................................................................................................42
Comentarios............................................................................................................................43
6. Types............................................................................................................................................44
Enteros....................................................................................................................................45
Números en punto flotante......................................................................................................45
Cadenas...................................................................................................................................45
Conversión de cadenas..................................................................................................47
Arrays.....................................................................................................................................48
Arrays unidimensionales...............................................................................................48
Arrays Multidimensionales...........................................................................................49
Objetos....................................................................................................................................50
Inicialización de Objetos...............................................................................................51
Type juggling..........................................................................................................................51
Forzado de tipos............................................................................................................52
7. Variables.......................................................................................................................................54
Conceptos Básicos..................................................................................................................55
Variables predefinidas.............................................................................................................56
Variables de Apache......................................................................................................56
Variables de entorno......................................................................................................58
Variables de PHP...........................................................................................................58
Ambito de las variables..........................................................................................................59Variables variables..................................................................................................................61
Variables externas a PHP........................................................................................................62
Formularios HTML (GET y POST).............................................................................62
IMAGE SUBMIT variable names.......................................................................63
Cookies HTTP..............................................................................................................63
Variables de entorno......................................................................................................64
Puntos en los nombres de variables de entrada.............................................................64
Determinando los tipos de variables.............................................................................65
8. Constantes....................................................................................................................................66
Sintaxis...................................................................................................................................67
Constantes predefinidas..........................................................................................................68
9. Expresiones..................................................................................................................................69
10. Operadores.................................................................................................................................73
Operadores Aritméticos..........................................................................................................74
Operadores de Asignación......................................................................................................74
Operadores Bit a bit................................................................................................................74
Operadores de Comparación..................................................................................................75
Operador de ejecución............................................................................................................76
Operadores de Incremento/decremento..................................................................................76
Operadores Lógicos................................................................................................................77
Precedencia de Operadores.....................................................................................................77
Operadores de Cadenas..........................................................................................................78
11. Estructuras de Control................................................................................................................80
if............................................................................................................................................81
vi
else .......................................................................................................................................81
elseif ...................................................................................................................................82
Sintaxis Alternativa de Estructuras de Control.......................................................................82
while .....................................................................................................................................83
do..while.............................................................................................................................84
for..........................................................................................................................................85
foreach .................................................................................................................................86
break .....................................................................................................................................88
continue...............................................................................................................................89
switch ...................................................................................................................................90
require()..................................................................................................................................92
include()..................................................................................................................................93
require_once().........................................................................................................................96
include_once()........................................................................................................................98
12. Funciones.................................................................................................................................100
Funciones definidas por el usuario.......................................................................................101
Parámetros de las funciones.................................................................................................101
Pasar parámetros por referencia..................................................................................101
Parámetros por defecto...............................................................................................102
Lista de longitud variable de parámetros....................................................................103
Devolver valores...................................................................................................................103
old_function ....................................................................................................................104
Funciones variable................................................................................................................104
13. Clases y Objetos.......................................................................................................................106
class ...................................................................................................................................107
14. References Explained...............................................................................................................110
What References Are............................................................................................................111
What References Do.............................................................................................................111
What References Are Not.....................................................................................................112
Passing by Reference............................................................................................................112
Returning References...........................................................................................................113
Unsetting References............................................................................................................114
Spotting References..............................................................................................................114
global References.....................................................................................................114
$this..........................................................................................................................115
III. Características .................................................................................................................................116
15. Manejando errores....................................................................................................................11616. Creando y manipulando imágenes...........................................................................................121
17. Autentificación HTTP con PHP...............................................................................................123
18. Cookies.....................................................................................................................................126
19. Manejo de envío de ficheros.....................................................................................................128
Envío de archivos con el método POST...............................................................................129
Errores comunes...................................................................................................................131
Envío de multiples ficheros..................................................................................................131
Soporte del método PUT......................................................................................................132
20. Usando archivos remotos.........................................................................................................134
21. Manejando conexiones.............................................................................................................137
vii
22. Conexiones persistentes a bases de datos.................................................................................139
23. Modo Seguro (Safe Mode).......................................................................................................142
Funciones restringidas/inhabilitadas por Modo Seguro.......................................................144
24. Using PHP from the command line.........................................................................................149
IV. Referencia de las Funciones...........................................................................................................162
I. Funciones específicas de Apache................................................................................................162
apache_child_terminate........................................................................................................163
apache_lookup_uri...............................................................................................................163
apache_note..........................................................................................................................164
apache_setenv.......................................................................................................................164
ascii2ebcdic..........................................................................................................................164
ebcdic2ascii..........................................................................................................................164
getallheaders.........................................................................................................................165
virtual....................................................................................................................................165
II. Funciones de matrices...............................................................................................................167
array_change_key_case........................................................................................................169
array_chunk..........................................................................................................................169
array_count_values...............................................................................................................170
array_diff..............................................................................................................................171
array_fill ...............................................................................................................................172
array_filter............................................................................................................................172
array_flip...............................................................................................................................174
array_intersect......................................................................................................................174
array_key_exists...................................................................................................................175
array_keys.............................................................................................................................175
array_map.............................................................................................................................176
array_merge_recursive.........................................................................................................179
array_merge..........................................................................................................................180
array_multisort.....................................................................................................................181
array_pad..............................................................................................................................182
array_pop..............................................................................................................................183
array_push............................................................................................................................183
array_rand.............................................................................................................................184
array_reduce.........................................................................................................................185
array_reverse........................................................................................................................185
array_search..........................................................................................................................186
array_shift.............................................................................................................................186
array_slice.............................................................................................................................187
array_splice...........................................................................................................................188
array_sum.............................................................................................................................189
array_unique.........................................................................................................................190
array_unshift.........................................................................................................................191
array_values..........................................................................................................................192
array_walk............................................................................................................................192
array......................................................................................................................................193
arsort.....................................................................................................................................194
asort......................................................................................................................................194
viii
compact.................................................................................................................................195
count.....................................................................................................................................195current...................................................................................................................................196
each.......................................................................................................................................196
end........................................................................................................................................198
extract...................................................................................................................................198
in_array.................................................................................................................................199
key........................................................................................................................................200
krsort.....................................................................................................................................200
ksort......................................................................................................................................201
list .........................................................................................................................................201
natcasesort............................................................................................................................202
natsort...................................................................................................................................202
next.......................................................................................................................................203
pos.........................................................................................................................................204
prev.......................................................................................................................................204
rango.....................................................................................................................................204
reset.......................................................................................................................................205
rsort.......................................................................................................................................205
shuffle...................................................................................................................................205
sizeof.....................................................................................................................................206
sort........................................................................................................................................206
uasort....................................................................................................................................206
uksort....................................................................................................................................207
usort......................................................................................................................................207
III. Funciones Aspell [deprecated].................................................................................................209
aspell_check-raw..................................................................................................................210
aspell_check.........................................................................................................................210
aspell_new............................................................................................................................210
aspell_suggest.......................................................................................................................211
IV. Funciones matemáticas de precisión arbitraria BCMath.........................................................212
bcadd.....................................................................................................................................213
bccomp.................................................................................................................................213
bcdiv.....................................................................................................................................213
bcmod...................................................................................................................................213
bcmul....................................................................................................................................213
bcpow....................................................................................................................................214
bcscale..................................................................................................................................214
bcsqrt....................................................................................................................................214
bcsub.....................................................................................................................................214
V. Funciones de compresión Bzip2...............................................................................................216
bzclose..................................................................................................................................218
bzcompress...........................................................................................................................218
bzdecompress.......................................................................................................................218
bzerrno..................................................................................................................................219
bzerror...................................................................................................................................219
bzerrstr..................................................................................................................................220
bzflush...................................................................................................................................220
ix
bzopen...................................................................................................................................220
bzread...................................................................................................................................221
bzwrite..................................................................................................................................221
VI. Funciones de calendario...........................................................................................................223
cal_days_in_month...............................................................................................................225
cal_from_jd...........................................................................................................................225
cal_info.................................................................................................................................225
cal_to_jd...............................................................................................................................225
easter_date............................................................................................................................225
easter_days...........................................................................................................................226
FrenchToJD..........................................................................................................................227
GregorianToJD.....................................................................................................................227JDDayOfWeek......................................................................................................................228
JDMonthName.....................................................................................................................228
JDToFrench..........................................................................................................................229
JDToGregorian.....................................................................................................................229
JDToJewish...........................................................................................................................229
JDToJulian............................................................................................................................229
jdtounix.................................................................................................................................229
JewishToJD...........................................................................................................................230
JulianToJD............................................................................................................................230
unixtojd.................................................................................................................................230
VII. Funciones del API de CCVS..................................................................................................232
ccvs_add...............................................................................................................................233
ccvs_auth..............................................................................................................................233
ccvs_command.....................................................................................................................233
ccvs_count............................................................................................................................233
ccvs_delete...........................................................................................................................234
ccvs_done.............................................................................................................................234
ccvs_init................................................................................................................................234
ccvs_lookup..........................................................................................................................235
ccvs_new..............................................................................................................................235
ccvs_report...........................................................................................................................235
ccvs_return...........................................................................................................................236
ccvs_reverse..........................................................................................................................236
ccvs_sale...............................................................................................................................236
ccvs_status............................................................................................................................237
ccvs_textvalue......................................................................................................................237
ccvs_void..............................................................................................................................237
VIII. soporte de las funciones COM para Windows......................................................................239
COM.....................................................................................................................................240
VARIANT .............................................................................................................................241
com_addref...........................................................................................................................242
com_get................................................................................................................................242
com_invoke...........................................................................................................................243
com_isenum..........................................................................................................................243
com_load_typelib.................................................................................................................243
com_load..............................................................................................................................243
x
com_propget.........................................................................................................................244
com_propput.........................................................................................................................244
com_propset.........................................................................................................................244
com_release..........................................................................................................................244
com_set.................................................................................................................................244
IX. Funciones de Clases/Objectos.................................................................................................245
call_user_method_array.......................................................................................................248
call_user_method..................................................................................................................248
class_exists...........................................................................................................................249
get_class_methods................................................................................................................249
get_class_vars.......................................................................................................................250
get_class...............................................................................................................................252
get_declared_classes.............................................................................................................252
get_object_vars.....................................................................................................................252
get_parent_class...................................................................................................................254
is_a........................................................................................................................................254
is_subclass_of.......................................................................................................................254
method_exists.......................................................................................................................254
X. Funciones de ClibPDF..............................................................................................................256
cpdf_add_annotation............................................................................................................259
cpdf_add_outline..................................................................................................................259
cpdf_arc................................................................................................................................259
cpdf_begin_text....................................................................................................................260cpdf_circle............................................................................................................................260
cpdf_clip...............................................................................................................................260
cpdf_close.............................................................................................................................261
cpdf_closepath_fill_stroke....................................................................................................261
cpdf_closepath_stroke..........................................................................................................261
cpdf_closepath......................................................................................................................261
cpdf_continue_text...............................................................................................................262
cpdf_curveto.........................................................................................................................262
cpdf_end_text.......................................................................................................................262
cpdf_fill_stroke.....................................................................................................................263
cpdf_fill.................................................................................................................................263
cpdf_finalize_page................................................................................................................263
cpdf_finalize.........................................................................................................................263
cpdf_global_set_document_limits........................................................................................264
cpdf_import_jpeg.................................................................................................................264
cpdf_lineto............................................................................................................................264
cpdf_moveto.........................................................................................................................265
cpdf_newpath........................................................................................................................265
cpdf_open.............................................................................................................................265
cpdf_output_buffer...............................................................................................................266
cpdf_page_init......................................................................................................................266
cpdf_place_inline_image......................................................................................................266
cpdf_rect...............................................................................................................................267
cpdf_restore..........................................................................................................................267
cpdf_rlineto...........................................................................................................................267
xi
cpdf_rmoveto........................................................................................................................267
cpdf_rotate_text....................................................................................................................268
cpdf_rotate............................................................................................................................268
cpdf_save_to_file..................................................................................................................268
cpdf_save..............................................................................................................................269
cpdf_scale.............................................................................................................................269
cpdf_set_action_url..............................................................................................................269
cpdf_set_char_spacing.........................................................................................................269
cpdf_set_creator...................................................................................................................270
cpdf_set_current_page..........................................................................................................270
cpdf_set_font_directories.....................................................................................................270
cpdf_set_font_map_file........................................................................................................270
cpdf_set_font........................................................................................................................271
cpdf_set_horiz_scaling.........................................................................................................271
cpdf_set_keywords...............................................................................................................271
cpdf_set_leading...................................................................................................................271
cpdf_set_page_animation.....................................................................................................272
cpdf_set_subject...................................................................................................................272
cpdf_set_text_matrix............................................................................................................272
cpdf_set_text_pos.................................................................................................................272
cpdf_set_text_rendering.......................................................................................................273
cpdf_set_text_rise.................................................................................................................273
cpdf_set_title........................................................................................................................273
cpdf_set_viewer_preferences...............................................................................................273
cpdf_set_word_spacing........................................................................................................274
cpdf_setdash.........................................................................................................................274
cpdf_setflat...........................................................................................................................274
cpdf_setgray_fill...................................................................................................................274
cpdf_setgray_stroke..............................................................................................................275
cpdf_setgray.........................................................................................................................275
cpdf_setlinecap.....................................................................................................................275
cpdf_setlinejoin....................................................................................................................275
cpdf_setlinewidth..................................................................................................................276
cpdf_setmiterlimit.................................................................................................................276
cpdf_setrgbcolor_fill.............................................................................................................276cpdf_setrgbcolor_stroke.......................................................................................................276
cpdf_setrgbcolor...................................................................................................................276
cpdf_show_xy.......................................................................................................................277
cpdf_show.............................................................................................................................277
cpdf_stringwidth...................................................................................................................277
cpdf_stroke...........................................................................................................................278
cpdf_text...............................................................................................................................278
cpdf_translate.......................................................................................................................278
XI. Crack functions........................................................................................................................279
crack_check..........................................................................................................................281
crack_closedict.....................................................................................................................281
crack_getlastmessage...........................................................................................................281
crack_opendict......................................................................................................................282
xii
XII. CURL, Client URL Library Functions...................................................................................283
curl_close..............................................................................................................................284
curl_errno.............................................................................................................................284
curl_error..............................................................................................................................284
curl_exec...............................................................................................................................284
curl_getinfo...........................................................................................................................285
curl_init.................................................................................................................................285
curl_setopt............................................................................................................................285
curl_version..........................................................................................................................288
XIII. Funciones de pago electrónico..............................................................................................289
cybercash_base64_decode....................................................................................................290
cybercash_base64_encode....................................................................................................290
cybercash_decr.....................................................................................................................290
cybercash_encr.....................................................................................................................290
XIV. Crédit Mutuel CyberMUT functions....................................................................................291
cybermut_creerformulairecm...............................................................................................292
cybermut_creerreponsecm....................................................................................................292
cybermut_testmac.................................................................................................................293
XV. Cyrus IMAP administration functions...................................................................................295
cyrus_authenticate................................................................................................................296
cyrus_bind............................................................................................................................296
cyrus_close...........................................................................................................................296
cyrus_connect.......................................................................................................................296
cyrus_query..........................................................................................................................297
cyrus_unbind........................................................................................................................297
XVI. Character type functions.......................................................................................................298
ctype_alnum.........................................................................................................................299
ctype_alpha...........................................................................................................................299
ctype_cntrl............................................................................................................................299
ctype_digit............................................................................................................................299
ctype_graph..........................................................................................................................299
ctype_lower..........................................................................................................................300
ctype_print............................................................................................................................300
ctype_punct...........................................................................................................................300
ctype_space...........................................................................................................................300
ctype_upper..........................................................................................................................301
ctype_xdigit..........................................................................................................................301
XVII. Funciones de la capa de abstraccion de bases de datos (dbm-style)....................................302
dba_close..............................................................................................................................304
dba_delete.............................................................................................................................304
dba_exists.............................................................................................................................304
dba_fetch..............................................................................................................................304
dba_firstkey..........................................................................................................................305
dba_insert.............................................................................................................................305
dba_nextkey..........................................................................................................................305
dba_open...............................................................................................................................306
dba_optimize........................................................................................................................306dba_popen.............................................................................................................................306
xiii
dba_replace...........................................................................................................................307
dba_sync...............................................................................................................................307
XVIII. Funciones de fecha y hora..................................................................................................309
checkdate..............................................................................................................................310
date.......................................................................................................................................310
getdate...................................................................................................................................311
gettimeofday.........................................................................................................................312
gmdate..................................................................................................................................312
gmmktime.............................................................................................................................313
gmstrftime.............................................................................................................................313
localtime...............................................................................................................................313
microtime..............................................................................................................................314
mktime..................................................................................................................................314
strftime..................................................................................................................................315
strtotime................................................................................................................................316
time.......................................................................................................................................317
XIX. Funciones para dBase...........................................................................................................319
dbase_add_record.................................................................................................................320
dbase_close...........................................................................................................................320
dbase_create.........................................................................................................................320
dbase_delete_record.............................................................................................................321
dbase_get_record_with_names.............................................................................................321
dbase_get_record..................................................................................................................321
dbase_numfields...................................................................................................................322
dbase_numrecords................................................................................................................322
dbase_open...........................................................................................................................322
dbase_pack...........................................................................................................................323
dbase_replace_record...........................................................................................................323
XX. Funciones dbm.......................................................................................................................324
dblist.....................................................................................................................................325
dbmclose...............................................................................................................................325
dbmdelete.............................................................................................................................325
dbmexists..............................................................................................................................325
dbmfetch...............................................................................................................................325
dbmfirstkey...........................................................................................................................325
dbminsert..............................................................................................................................326
dbmnextkey..........................................................................................................................326
dbmopen...............................................................................................................................326
dbmreplace...........................................................................................................................327
XXI. dbx functions.........................................................................................................................328
dbx_close..............................................................................................................................331
dbx_compare........................................................................................................................331
dbx_connect..........................................................................................................................332
dbx_error..............................................................................................................................333
dbx_query.............................................................................................................................334
dbx_sort................................................................................................................................337
XXII. DB++ Functions..................................................................................................................339
dbplus_add............................................................................................................................343
xiv
dbplus_aql.............................................................................................................................343
dbplus_chdir.........................................................................................................................343
dbplus_close.........................................................................................................................344
dbplus_curr...........................................................................................................................344
dbplus_errcode.....................................................................................................................345
dbplus_errno.........................................................................................................................345
dbplus_find...........................................................................................................................345
dbplus_first...........................................................................................................................346
dbplus_flush..........................................................................................................................346
dbplus_freealllocks...............................................................................................................347dbplus_freelock....................................................................................................................347
dbplus_freerlocks.................................................................................................................347
dbplus_getlock......................................................................................................................348
dbplus_getunique..................................................................................................................348
dbplus_info...........................................................................................................................349
dbplus_last............................................................................................................................349
dbplus_lockrel......................................................................................................................349
dbplus_next...........................................................................................................................350
dbplus_open..........................................................................................................................350
dbplus_prev..........................................................................................................................351
dbplus_rchperm....................................................................................................................351
dbplus_rcreate.......................................................................................................................351
dbplus_rcrtexact....................................................................................................................352
dbplus_rcrtlike......................................................................................................................352
dbplus_resolve......................................................................................................................353
dbplus_restorepos.................................................................................................................353
dbplus_rkeys.........................................................................................................................353
dbplus_ropen........................................................................................................................354
dbplus_rquery.......................................................................................................................354
dbplus_rrename....................................................................................................................355
dbplus_rsecindex..................................................................................................................355
dbplus_runlink......................................................................................................................355
dbplus_rzap...........................................................................................................................356
dbplus_savepos.....................................................................................................................356
dbplus_setindex....................................................................................................................357
dbplus_setindexbynumber....................................................................................................357
dbplus_sql.............................................................................................................................357
dbplus_tcl.............................................................................................................................358
dbplus_tremove....................................................................................................................358
dbplus_undo.........................................................................................................................358
dbplus_undoprepare.............................................................................................................359
dbplus_unlockrel..................................................................................................................359
dbplus_unselect....................................................................................................................359
dbplus_update.......................................................................................................................360
dbplus_xlockrel....................................................................................................................360
dbplus_xunlockrel................................................................................................................360
XXIII. Direct IO functions.............................................................................................................362
dio_close...............................................................................................................................363
xv
dio_fcntl................................................................................................................................363
dio_open...............................................................................................................................363
dio_read................................................................................................................................364
dio_seek................................................................................................................................364
dio_stat.................................................................................................................................365
dio_truncate..........................................................................................................................365
dio_write...............................................................................................................................365
XXIV. Funciones con directorios..................................................................................................367
chdir......................................................................................................................................368
chroot....................................................................................................................................368
dir..........................................................................................................................................368
closedir.................................................................................................................................369
getcwd...................................................................................................................................369
opendir..................................................................................................................................369
readdir...................................................................................................................................369
rewinddir...............................................................................................................................370
XXV. Funciones de DOM XML....................................................................................................371
DomAttribute->name...........................................................................................................372
DomAttribute->specified......................................................................................................372
DomAttribute->value............................................................................................................372
DomDocument->add_root [deprecated]...............................................................................372