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Mhash Functions

簡介

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.

Note: 本擴充功能已被移動到 » PECL 函式庫中且自以下版本起不再被包含到 PHP 中:5.3.0. This extension is obsoleted by Hash.

需求

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

安裝

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

執行時期設定

本擴充功能在 php.ini 中未定義任何設定選項。

資源類型

本擴充功能未定義任何資源類型。

預設常數

以下常數由擴充功能定義,因此只有在擴充功能被編譯到 PHP 中,或者在執行時被動態載入後才有效。

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 If a hash is not listed here, but is listed by mhash as supported, you can safely assume that this documentation is outdated.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

範例

Example#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 

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