mhash

(PHP 4, PHP 5, PHP 7)

mhash — Computes hash

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

mhash() applies a hash function specified by hash to the data.

hash: The hash ID. One of the MHASH_hashname constants.
data: The user input, as a string.
key: If specified, the function will return the resulting HMAC instead. 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.

Returns the resulting hash (also called digest) or HMAC as a string, or FALSE on error.