xdiff_file_diff_binary Make binary diff of two files boolxdiff_file_diff_binary stringfile1 stringfile2 stringdest xdiff_file_diff_binary makes binary diff of files file1 and file2 and stores result in file dest. This function works with both text and binary files. Resulting file is in binary format. Both files will be loaded into memory so ensure that your memory_limit is set high enough. &return.success; The following code makes binary diff of two archives. ]]> See also xdiff_string_diff_binary.