   #PHP Manual Function Reference mcve_void mhash_count

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LVI. Mhash Functions

Introduction

   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.

Requirements

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

Installation

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

Runtime Configuration

   This extension has no configuration directives defined in php.ini.

Resource Types

   This extension has no resource types defined.

Predefined Constants

   The constants below are defined by this extension, and will only be
   available when the extension has either been compiled into PHP or
   dynamically loaded at runtime.

   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   safely assume that this documentation is outdated.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_MD5
     * MHASH_SHA1
     * MHASH_HAVAL256
     * MHASH_HAVAL192
     * MHASH_HAVAL160
     * MHASH_HAVAL128
     * MHASH_RIPEMD160
     * MHASH_GOST
     * MHASH_TIGER
     * MHASH_CRC32
     * MHASH_CRC32B

Examples

   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

   Table of Contents
   mhash_count -- Get the highest available hash id
   mhash_get_block_size -- Get the block size of the specified hash
   mhash_get_hash_name -- Get the name of the specified hash
   mhash_keygen_s2k -- Generates a key
   mhash -- Compute hash
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