(PHP 4 >= 4.2.0)

md5_file -- Calculates the md5 hash of a given filename


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.

注: 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().

虎的笑话 虎的成语 虎的歇后语