(PHP 4 >= 4.2.0, PHP 5)
md5_file — Calculates the md5 hash of a given file
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.
The filename
When TRUE, returns the digest in raw binary format with a length of 16. Defaults to FALSE.
Returns a string on success, FALSE otherwise.
| 版本 | 说明 |
|---|---|
| 5.0.0 | Added the raw_output parameter |
| 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/..') |
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);
?>