md5_file

Calculates the md5 hash of a given file

&reftitle.description; ``string``false```md5_file` `string` `filename` `bool` `binary`&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.

&reftitle.parameters;

`filename`

- The filename

`binary`

- When &true;, returns the digest in raw binary format with a length of 16.

&reftitle.returnvalues;

Returns a string on success, &false; otherwise.

&reftitle.examples;

### Usage example of `md5_file`

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

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

&reftitle.seealso;

- `md5`
- `sha1_file`
- `crc32`