(PHP 4, PHP 5, PHP 7, PHP 8)
mhash — Computes hash
$algo
, string $data
, string|null $key
= null
) : string|false
mhash() applies a hash function specified by
algo
to the data
.
algo
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.
版本 | 说明 |
---|---|
8.0.0 |
key is now nullable.
|