md5_file Calculates the md5 hash of a given file &reftitle.description; stringmd5_file stringfilename boolraw_outputfalse 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 raw_output When &true;, returns the digest in raw binary format with a length of 16. &reftitle.returnvalues; Returns a string on success, &false; otherwise. &reftitle.changelog; &Version; &Description; 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/..') 5.0.0 Added the raw_output parameter &reftitle.examples; ]]> &reftitle.seealso; md5 sha1_file crc32