hash_hmac_file
(PHP 5 >= 5.1.2, PECL hash:1.1-1.5)
hash_hmac_file — Generate a keyed hash value using the HMAC method and the contents of a given file
Description
string hash_hmac_file
( string $algo
, string $filename
, string $key
[, bool $raw_output
] )
Parameters
-
algo
-
Name of selected hashing algorithm (i.e. "md5", "sha256", "haval160,4", etc..)
-
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.
Default value (FALSE) outputs lowercase hexits.
Return Values
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
Example #1 hash_hmac_file() example
<?php
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
hash_final
