# md5_file

(PHP 4 >= 4.2.0, PHP 5, PECL hash:1.1-1.3)

md5_file — Calculates the md5 hash of a given file

### Description

string md5_file ( string `$filename` [, bool `$raw_output` ] )

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. Defaults to `FALSE`.

### Return Values

Returns a string on success, `FALSE` otherwise.

### ChangeLog

Version | Description
--- | ---
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/..')

### See Also

- md5()
- sha1_file()
- crc32()