(PHP 5 >= 5.1.2, PHP 7, PECL hash >= 1.1)
Generate a keyed hash value using the HMAC method
string hash_hmac ( string $algo, string $data, string $key [, bool $raw_output = false ] )
Parameters:
algo
Name of selected hashing algorithm (i.e. "md5", "sha256", "haval160,4", etc..) See hash_algos() for a list of supported algorithms.
data
Message to be hashed.
key
Shared secret key used for generating the HMAC variant of the message digest.
raw_output
When set to TRUE
, outputs raw binary data. FALSE
outputs lowercase hexits.
Returns:
Returns a string containing the calculated message digest as lowercase hexits unless raw_output
is set to true in which case the raw binary representation of the message digest is returned. Returns FALSE
when algo
is unknown.
Examples:
hash_hmac() example
<?php echo hash_hmac('ripemd160', 'The quick brown fox jumped over the lazy dog.', 'secret'); ?>
The above example will output:
b8e7ae12510bdfb1812e463a7f086122cf37e4f7
See also:
hash() -
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