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md5_file

(PHP 4 >= 4.2.0, PHP 5)

md5_fileCalculates the md5 hash of a given file

Description

string md5_file ( string $filename [, bool $raw_output = 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

raw_output

When TRUE, returns the digest in raw binary format with a length of 16.

Return Values

Returns a string on success, FALSE otherwise.

Changelog

Version Description
5.1.0 Changed the function to use the streams API. It means that you can use it with wrappers, like md5_file('http://example.com/..')
5.0.0 Added the raw_output parameter

Examples

Example #1 Usage example of md5_file()

<?php
$file 
'php-5.3.0alpha2-Win32-VC9-x64.zip';

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

See Also

  • md5() - Calculate the md5 hash of a string
  • sha1_file() - Calculate the sha1 hash of a file
  • crc32() - Calculates the crc32 polynomial of a string

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