hash_hmac_file
hash_hmac_file
(PHP 5 >= 5.1.2, PHP 7, PECL hash >= 1.1)
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 = 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.
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.
Changelog
Version | Description |
---|---|
7.2.0 | Usage of non-cryptographic hash functions (adler32, crc32, crc32b, fnv132, fnv1a32, fnv164, fnv1a64, joaat) was disabled. |
Examples
Example #1 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
- hash_algos() - Return a list of registered hashing algorithms
- hash_hmac() - Generate a keyed hash value using the HMAC method
- hash_file() - Generate a hash value using the contents of a given file
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Licensed under the Creative Commons Attribution License v3.0 or later.
https://secure.php.net/manual/en/function.hash-hmac-file.php