(PHP 5 >= 5.1.2, PHP 7, PECL hash >= 1.1)
Generate a keyed hash value using the HMAC method and the contents of a given file
string hash_hmac_file ( string $algo, string $filename, 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.
filename
URL describing location of file to be hashed; Supports fopen wrappers.
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.
Examples:
hash_hmac_file() example
<?php
/* Create a file to calculate hash of */
file_put_contents('example.txt', 'The quick brown fox jumped over the lazy dog.');
echo hash_hmac_file('md5', 'example.txt', 'secret');
?>
The above example will output:
7eb2b5c37443418fc77c136dd20e859c
See also:
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