   #PHP Manual String functions ltrim md5

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                                   md5_file

   (PHP 4 >= 4.2.0)
   md5_file -- Calculates the md5 hash of a given filename

Description

   string md5_file ( string filename [, bool raw_output])

   Calculates the MD5 hash of the specified filename using the RSA Data
   Security, Inc. MD5 Message-Digest Algorithm, and returns that hash.
   The hash is a 32-character hexadecimal number. If the optional
   raw_output is set to TRUE, then the md5 digest is instead returned in
   raw binary format with a length of 16.

     Note: The optional raw_output parameter was added in PHP 5.0.0 and
     defaults to FALSE

   This function has the same purpose of the command line utility md5sum.

   See also md5(), crc32(), and sha1_file().
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