You can also restart a running service and force it to reread
its configuration file by using:

CGI 和 CLI 可执行文件以及 web 服务器模块都需要
php4ts.dll（php5ts.dll）。必须确认该文件可以在 PHP
安装路径中找到。对该 DLL 的搜索顺序为：

安装

You need to compile PHP with the
--with-mhash[=DIR] parameter to enable
this extension. DIR is the mhash install directory.

At the time of writing this, the library supports the algorithms:

SHA1, SHA160, SHA192, SHA224, SHA384, SHA512, HAVAL128, HAVAL160, HAVAL192, HAVAL224, HAVAL256, RIPEMD128, RIPEMD256, RIPEMD320, MD4, MD5, TIGER, TIGER128, TIGER160, ALDER32, CRC32, CRC32b, WHIRLPOOL, GOST, SNEFRU128, SNEFRU256

Mapping these to bitlengths, we can see:

Key:

Y : The name is suffixed by the bit-length


Number : The name is suffixed by this number


ONL : There is no suffix


I : The hash is not secure at this length


X : The hash has been padded and is not as strong as the bit-length suggests

以下常量由本扩展模块定义，因此只有在本扩展模块被编译到
PHP 中，或者在运行时被动态加载后才有效。

Here is a list of hashes which are currently supported by mhash. If a
hash is not listed here, but is listed by mhash as supported, you can
safely assume that this documentation is outdated.