Beginning with PHP 4.3.0 these functions are enabled by default. For older versions you have to configure and compile PHP with --enable-tokenizer . You can disable tokenizer support with --disable-tokenizer .
PHP 的 Windows 版本已經內置該擴充功能的支援。無需載入任何附加擴充功能即可使用這些函式。
Note: Built-in support for tokenizer is available as of PHP 4.3.0.