hash_file

(PHP 5 >= 5.1.2, PHP 7, PHP 8, PECL hash >= 1.1)

hash_fileGenerate a hash value using the contents of a given file

Descrição

hash_file(
    string $algo,
    string $filename,
    bool $binary = false,
    array $options = []
): string|false

Parâmetros

algo

Name of selected hashing algorithm (i.e. "md5", "sha256", "haval160,4", etc..). For a list of supported algorithms see hash_algos().

filename

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

binary

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

options

An array of options for the various hashing algorithms. Currently, only the "seed" parameter is supported by the MurmurHash variants.

Valor Retornado

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.

Registro de Alterações

Versão Descrição
8.1.0 The options parameter has been added.

Exemplos

Exemplo #1 Using hash_file()

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

echo
hash_file('sha256', 'example.txt');
?>

O exemplo acima produzirá:

68b1282b91de2c054c36629cb8dd447f12f096d3e3c587978dc2248444633483

Veja Também

  • hash() - Generate a hash value (message digest)
  • hash_hmac_file() - Generate a keyed hash value using the HMAC method and the contents of a given file
  • hash_update_file() - Pump data into an active hashing context from a file
  • md5_file() - Calculates the md5 hash of a given file
  • sha1_file() - Calcula a hash sha1 de um arquivo