string mhash ( int $hash , string $data [, string $key ] )
mhash() applies a hash function specified by hash to the data.
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select $hashMHASH_ADLER32MHASH_CRC32MHASH_CRC32BMHASH_GOSTMHASH_HAVAL128MHASH_HAVAL160MHASH_HAVAL192MHASH_HAVAL256MHASH_MD4MHASH_MD5MHASH_RIPEMD160MHASH_SHA1MHASH_SHA256MHASH_TIGERMHASH_TIGER128MHASH_TIGER160
string $data
string $key