   #PHP Manual Mhash Functions mhash_keygen_s2k Mimetype Functions

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                                     mhash

   (PHP 3>= 3.0.9, PHP 4 )
   mhash -- Compute hash

Description

   string mhash ( int hash, string data [, string key])

   mhash() applies a hash function specified by hash to the data and
   returns the resulting hash (also called digest). If the key is
   specified it will return the resulting HMAC. HMAC is keyed hashing for
   message authentication, or simply a message digest that depends on the
   specified key. Not all algorithms supported in mhash can be used in
   HMAC mode. In case of an error returns FALSE.
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