hash_file

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

hash_file — Generate a hash value using the contents of a given file

Опис

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

Параметри

algo: Name of selected hashing algorithm (e.g. "sha256"). 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.

Значення, що повертаються

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, або false в разі помилки.

Журнал змін

Версія Опис

8.1.0 The options parameter has been added.

Версія	Опис
8.1.0	The `options` parameter has been added.

Приклади

Приклад #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');
?>

Поданий вище приклад виведе:

68b1282b91de2c054c36629cb8dd447f12f096d3e3c587978dc2248444633483

Прогляньте також

hash_init() - Initialize an incremental hashing context
hash_hmac_file() - Generate a keyed hash value using the HMAC method and the contents of a given file