php man page for xdiff_file_bdiff

XDIFF_FILE_BDIFF(3)							 1						       XDIFF_FILE_BDIFF(3)

xdiff_file_bdiff - Make binary diff of two files

SYNOPSIS
       bool xdiff_file_bdiff (string  $old_file, string  $new_file, string  $dest)

DESCRIPTION
	Makes  a  binary  diff	of two files and stores the result in a patch file. This function works with both text and binary files. Resulting
       patch file can be later applied using xdiff_file_bpatch(3)/xdiff_string_bpatch(3).

PARAMETERS
	      o $old_file
		- Path to the first file. This file acts as "old" file.

	      o $new_file
		- Path to the second file. This file acts as "new" file.

	      o $dest
		- Path of the resulting patch file. Resulting file contains differences between "old" and "new" files. It is in binary format  and
		is human-unreadable.

RETURN VALUES
	Returns TRUE on success or FALSE on failure.

EXAMPLES
       Example #1

	      xdiff_file_bdiff(3) example

	       The following code makes binary diff of two archives.

	      <?php
	      $old_version = 'my_script_1.0.tgz';
	      $new_version = 'my_script_1.1.tgz';

	      xdiff_file_bdiff($old_version, $new_version, 'my_script.bdiff');
	      ?>

NOTES
       Note

	       Both files will be loaded into memory so ensure that your memory_limit is set high enough.

SEE ALSO
       xdiff_file_bpatch(3).

PHP Documentation Group 												       XDIFF_FILE_BDIFF(3)