PHP 8.1.0 RC 2 available for testing


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

hash_hmac_fileGenerate a keyed hash value using the HMAC method and the contents of a given file


hash_hmac_file ( string $algo , string $data , string $key , bool $binary = false ) : string|false



Name of selected hashing algorithm (i.e. "md5", "sha256", "haval160,4", etc..) See hash_hmac_algos() for a list of supported algorithms.


URL describing location of file to be hashed; Supports fopen wrappers.


Shared secret key used for generating the HMAC variant of the message digest.


When set to true, outputs raw binary data. false outputs lowercase hexits.

Valorile întoarse

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. Returns false when algo is unknown or is a non-cryptographic hash function, or if the file data cannot be read.

Istoricul schimbărilor

Versiune Descriere
7.2.0 Usage of non-cryptographic hash functions (adler32, crc32, crc32b, fnv132, fnv1a32, fnv164, fnv1a64, joaat) was disabled.


Example #1 hash_hmac_file() example

/* Create a file to calculate hash of */
file_put_contents('example.txt''The quick brown fox jumped over the lazy dog.');


Exemplul de mai sus va afișa:


A se vedea și

  • hash_hmac_algos() - Return a list of registered hashing algorithms suitable for hash_hmac
  • 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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