php man page for hash_update

HASH_UPDATE(3)								 1							    HASH_UPDATE(3)

hash_update - Pump data into an active hashing context

SYNOPSIS
       bool hash_update (resource  $context, string  $data)

DESCRIPTION
PARAMETERS
	      o $context
		- Hashing context returned by hash_init(3).

	      o $data
		- Message to be included in the hash digest.

RETURN VALUES
	Returns TRUE.

SEE ALSO
       hash_init(3), hash_update_file(3), hash_update_stream(3), hash_final(3).

PHP Documentation Group 													    HASH_UPDATE(3)