Nu-Coder Manual

PhpExpress Manual

PHP Joomla
Development

md5	metaphone

String Functions	Last updated: Mon, 26 Oct 2026

md5_file

(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)

md5_file — Calculates the md5 hash of a given file

Description

function md5_file(string $filename, bool $binary = false): string|false

Calculates the MD5 hash of the file specified by the filename parameter using the » RSA Data Security, Inc. MD5 Message-Digest Algorithm, and returns that hash. The hash is a 32-character hexadecimal number.

Parameters

filename: The filename
binary: When true, returns the digest in raw binary format with a length of 16.

Return Values

Returns a string on success, false otherwise.

Examples

Example #1 Usage example of md5_file()

<?php
$file = '/examples/book.xml';

echo 'MD5 file hash of ' . $file . ': ' . md5_file($file);
?>

See Also

hash_file() - Generate a hash value using the contents of a given file
hash_init() - Initialize an incremental hashing context
md5() - Calculate the md5 hash of a string

md5	metaphone

String Functions	Last updated: Mon, 26 Oct 2026