php man page for xdiff_string_bdiff

XDIFF_STRING_BDIFF(3)							 1						     XDIFF_STRING_BDIFF(3)

xdiff_string_bdiff - Make binary diff of two strings

SYNOPSIS
       string xdiff_string_bdiff (string  $old_data, string  $new_data)

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

PARAMETERS
	      o $old_data
		- First string with binary data. It acts as "old" data.

	      o $new_data
		- Second string with binary data. It acts as "new" data.

RETURN VALUES
	Returns string with binary diff containing differences between "old" and "new" data or FALSE if an internal error occurred.

SEE ALSO
       xdiff_string_bpatch(3).

PHP Documentation Group 												     XDIFF_STRING_BDIFF(3)