mhash
(PHP 4, PHP 5)
mhash — Compute hash
说明
string mhash
( int $hash
, string $data
[, string $key
] )
mhash() applies a hash function specified by
hash
to the data
.
参数
-
hash
-
The hash id. One of the MHASH_XXX 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.
返回值
Returns the resulting hash (also called digest) or HMAC as a string, or
FALSE on errors.