Unicode Functions
Introduction
Unicode Support.
This extension is still in development and it isn't available to public yet.
Requirements
» ICU 3.4 or later is required.
Installation
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.
Runtime Configuration
The behaviour of these functions is affected by settings in php.ini.
| 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. |
Here's a short explanation of the configuration directives.
- unicode.output_encoding string
-
Default encoding for output.
Predefined Constants
The constants below are defined by this extension, and will only be available when the extension has either been compiled into PHP or dynamically loaded at runtime.
| 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 |
Table of Contents
- 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