PHP Manual
Hash Functions
Pump data into an active hashing context

hash_update

(PHP 5 >= 5.1.2, PHP 7, PECL hash >= 1.1)

hash_update — Pump data into an active hashing context

Description

hash_update ( HashContext $context , string $data ) : bool

Parameters

context: Hashing context returned by hash_init().
data: Message to be included in the hash digest.

Return Values

Returns TRUE.

Changelog

Version	Description
7.2.0	Accept HashContext instead of resource.

See Also

hash_init() - Initialize an incremental hashing context
hash_update_file() - Pump data into an active hashing context from a file
hash_update_stream() - Pump data into an active hashing context from an open stream
hash_final() - Finalize an incremental hash and return resulting digest