hash_update
  (PHP 5 >= 5.1.2, PECL hash >= 1.1)
hash_update — Pump data into an active hashing context
  
 
  설명
  
   bool hash_update
    ( resource $context
   , string $data
   )
  
 
  인수
  
   
    - 
     context
     
 - 
      
       Hashing context returned by hash_init().
      
      
    
    - 
     data
     
 - 
      
       Message to be included in the hash digest.