简介

These functions are intended to work with mhash . Mhash can be used to create checksums, message digests, message authentication codes, and more.

This is an interface to the mhash library. mhash supports a wide variety of hash algorithms such as MD5, SHA1, GOST, and many others. For a complete list of supported hashes, refer to the documentation of mhash. The general rule is that you can access the hash algorithm from PHP with MHASH_HASHNAME. For example, to access TIGER you use the PHP constant MHASH_TIGER.

需求

To use it, download the mhash distribution from its web site and follow the included installation instructions.

安装

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

运行时配置

本扩展模块在 php.ini 中未定义任何配置选项。

资源类型

本扩展模块未定义任何资源类型。

预定义常量

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 If a hash is not listed here, but is listed by mhash as supported, you can safely assume that this documentation is outdated.

• MHASH_ADLER32

• MHASH_CRC32

• MHASH_CRC32B

• MHASH_GOST

• MHASH_HAVAL128

• MHASH_HAVAL160

• MHASH_HAVAL192

• MHASH_HAVAL256

• MHASH_MD4

• MHASH_MD5

• MHASH_RIPEMD160

• MHASH_SHA1

• MHASH_SHA256

• MHASH_TIGER

• MHASH_TIGER128

• MHASH_TIGER160

范例

例子 1. Compute the MD5 digest and hmac and print it out as hex <?php $input = "what do ya want for nothing?" ; $hash = mhash ( MHASH_MD5 , $input ); echo "The hash is " . bin2hex ( $hash ) . "<br />\n" ; $hash = mhash ( MHASH_MD5 , $input , "Jefe" ); echo "The hmac is " . bin2hex ( $hash ) . "<br />\n" ; ?> This will produce: The hash is d03cb659cbf9192dcd066272249f8412 The hmac is 750c783e6ab0b503eaa86e310a5db738