Calculates the md5 hash of a given file

# md5_file

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

md5_file — Calculates the md5 hash of a given file

### Description

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

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