(PHP 4, PHP 5, PHP 7, PHP 8)
mhash — Computes hash
此函数自 PHP 8.1.0 起弃用。强烈建议不要应用此函数。
$algo, string $data, ?string $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.
      
dataThe user input, as a string.
keyIf 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 | 
|---|---|
| 8.1.0 | This function has been deprecated.
        Use the hash_*()functions instead. | 
| 8.0.0 | keyis now nullable. | 
