hash_update()
hash_update() — Pump data into an active hashing context.
Built-in function of PHP 8.5. The manual lists it as available in PHP 5 >= 5.1.2, PHP 7, PHP 8, PECL hash >= 1.1. This page is the reference card: signature, parameters and return value, plus the changelog and the example the manual provides.
Signature
hash_update(HashContext $context, string $data): true
Parameters
| Parameter | Type | What it takes |
|---|---|---|
| $context | HashContext | Hashing context returned by hash_init(). |
| $data | string | Message to be included in the hash digest. |
Return value
Always returns true.
Example
The PHP manual ships no example for hash_update(); the signature and the parameter table above are the contract.
Changelog
| Version | Change |
|---|---|
| 8.4.0 | Now has a return type of true instead of bool. |
| 7.2.0 | Accept HashContext instead of resource. |
See also
hash_init(), hash_update_file(), hash_update_stream(), hash_final()
All PHP 8.5 built-in functions
Reference card built from the PHP manual page hash_update() (PHP documentation, CC BY 3.0). The page is generated from the manual, so the wording of the parameter and return value text follows php.net.