PHP Manual
Hash Functions
Generate a hash value (message digest)

hash

(PHP 5 >= 5.1.2, PHP 7, PHP 8, PECL hash >= 1.1)

hash — Generate a hash value (message digest)

Description

hash(
    string $algo,
    string $data,
    bool $binary = false,
    array $options = []
): string

Parameters

algo: Name of selected hashing algorithm (e.g. "sha256"). For a list of supported algorithms see hash_algos().
data: Message to be hashed.
binary: When set to true, outputs raw binary data. false outputs lowercase hexits.
options: An array of options for the various hashing algorithms. Currently, only the "seed" parameter is supported by the MurmurHash variants.

Return Values

Returns a string containing the calculated message digest as lowercase hexits unless binary is set to true in which case the raw binary representation of the message digest is returned.

Changelog

Version	Description
8.1.0	The `options` parameter has been added.
8.0.0	hash() now throws a ValueError exception if `algo` is unknown; previously, `false` was returned instead.

Examples

Example #1 A hash() example

<?php
echo hash('sha256', 'The quick brown fox jumped over the lazy dog.');
?>

The above example will output:

68b1282b91de2c054c36629cb8dd447f12f096d3e3c587978dc2248444633483