xdiff_string_rabdiff

xdiff_string_rabdiff

Make a binary diff of two strings using the Rabin's polynomial fingerprinting algorithm

 **xdiff_string_rabdiff** string $old_data string $new_data

Makes a binary diff of two strings using the Rabin's polynomial fingerprinting algorithm implemented by . Compared to , this algorithm generally produces smaller diffs and operates faster, while remaining fully compatible with and for applying patches. libxdiffxdiff_string_bdiff``xdiff_string_bpatch``xdiff_file_bpatch

This function can be used with both text and binary data. The resulting diff data can later be applied to recreate the new version from the old one.

For further information about the algorithm, see the . libxdiff documentation

old_dataThe first string containing the "old" binary data.

new_dataThe second string containing the "new" binary data.

Returns a binary diff string containing the differences between the old and new data,return.falseforfailure.

Voorbeeld: Creation of a binary diff between two strings

<?php
$old = file_get_contents('file_v1.txt');
$new = file_get_contents('file_v2.txt');

$diff = xdiff_string_rabdiff($old, $new);
file_put_contents('patch.rdiff', $diff);
?>

xdiff_string_bdiff``xdiff_string_bpatch``xdiff_file_bpatch