Unicode Functions

Introducción

Unicode Support.

Warning

This extension is still in development and it isn't available to public yet.

Requisitos

» ICU 3.4 or later is required.

Instalación

First you should download and install ICU:

Example#1 install ICU on Unix

./configure --disable-threads --enable-extras --enable-icuio --enable-layout
make && make install

Then checkout latest PHP and configure it --with-icu-dir=<dir> option, where <dir> was the dir to where you installed ICU. You don't need to explicitly use this option if you install ICU to a standard location.

Configuración en tiempo de ejecución

El comportamiento de estas funciones está afectado por los valores definidos en php.ini.

**Unicode Configuration Options**
Name	Default	Changeable	Changelog
unicode.fallback_encoding	NULL	PHP_INI_ALL	Available since PHP 6.0.0.
unicode.from_error_mode	"2"	PHP_INI_ALL	Available since PHP 6.0.0.
unicode.from_error_subst_char	"3f"	PHP_INI_ALL	Available since PHP 6.0.0.
unicode.http_input_encoding	NULL	PHP_INI_ALL	Available since PHP 6.0.0.
unicode.output_encoding	NULL	PHP_INI_ALL	Available since PHP 6.0.0.
unicode.runtime_encoding	NULL	PHP_INI_ALL	Available since PHP 6.0.0.
unicode.script_encoding	NULL	PHP_INI_ALL	Available since PHP 6.0.0.
unicode.semantics	"0"	PHP_INI_SYSTEM	Available since PHP 6.0.0.

For further details and definitions of the PHP_INI_* constants, see the Directivas de php.ini.

A continuación se presenta una corta explicación de las directivas de configuración.

unicode.output_encoding string: Default encoding for output.

Constantes predefinidas

Estas constantes están definidas por esta extensión y estarán disponibles solamente cuando la extensión ha sido o bien compilada dentro de PHP o grabada dinámicamente en tiempo de ejecución.

constant	value	description
U_INVALID_STOP	0	stop at first invalid character
U_INVALID_SKIP	1	skip invalid characters
U_INVALID_SUBSTITUTE	2	replace invalid characters
U_INVALID_ESCAPE	3	escape invalid characters

unicode_decode — Convert a binary string into a Unicode string
unicode_encode — Convert a unicode string in any encoding
unicode_get_error_mode — Get the error mode for strings conversions
unicode_get_subst_char — Get the substitution character for string conversion errors
unicode_semantics — Check whether unicode semantics is enabled
unicode_set_error_mode — Set the error mode for strings conversions
unicode_set_subst_char — Set the substitution character for string conversion errors

add a note User Contributed Notes
Unicode

Hugo Dworak (post at o2 dot pl)
23-Nov-2005 05:04


If you are really interested in PHP 6 and its Unicode support you should read:

http://www.zend.com/zend/week/php-unicode-design.txt

(and in general http://www.zend.com/zend/week/)

plus cvs/php6/README.UNICODE and cvs/php6/README.UNICODE-UPGRADES



After you compile PHP 6, make sure that you have enabled unicode_semantics = on in php.ini (an old PHP 5 configuration file will not do as it does not provide those new Unicode-related options).

add a note

unicode_decode

token_name

Last updated: Tue, 27 Nov 2007