hash_update_file
  (PHP 5 >= 5.1.2, PECL hash >= 1.1)
hash_update_file — Pump data into an active hashing context from a file
  
 
  Description
  
   bool hash_update_file
    ( resource $hcontext
   , string $filename
   [, resource $scontext = NULL
  ] )
  
 
  Parameters
  
   
    
     - 
hcontext
- 
      
       Hashing context returned by hash_init().
       
- 
filename
- 
      
       URL describing location of file to be hashed; Supports fopen wrappers.
       
- 
scontext
- 
      
       Stream context as returned by stream_context_create().
       
 
 
  Return Values
  
   Returns TRUE on success or FALSE on failure.
  
  
 
  See Also
  
   
    - hash_init() - Initialize an incremental hashing context
- hash_update() - Pump data into an active hashing context
- hash_update_stream() - Pump data into an active hashing context from an open stream
- hash_final() - Finalize an incremental hash and return resulting digest
- hash() - Generate a hash value (message digest)
- hash_file() - Generate a hash value using the contents of a given file