md5_file Calculates the md5 hash of a given file &reftitle.description; stringfalsemd5_file stringfilename boolbinary&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; ]]> &reftitle.seealso; md5 sha1_file crc32