First you should download and install ICU:
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.
这些函数的行为受 php.ini 的影响。
表 1. 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 | off | PHP_INI_PERDIR | Available since PHP 6.0.0. |
以下是配置选项的简要解释。
unicode.output_encoding
stringDefault encoding for output.