note 118694 added to function.levenshtein

What is wrong with this function? Seems that custom insert/replace/delete weights do not work as expected. <?php $a = '1 apple'; $b = '2 apples'; $levenshtein = levenshtein($a, $b); $inserts = levenshtein($a, $b, 1, 0, 0); $replaces = levenshtein($a, $b, 0, 1, 0); $deletes = levenshtein($a, $b, 0, 0, 1); echo '<pre>'; var_export(array( 'levenshtein' => $levenshtein, 'inserts' => $inserts, 'replaces' => $replaces, 'deletes' => $deletes )); /* Output array ( 'levenshtein' => 2, 'inserts' => 1, 'replaces' => 0, 'deletes' => 0, ) */ ?> ---- Server IP: 72.52.91.14 Probable Submitter: 46.150.103.21 ---- Manual Page -- http://php.net/manual/en/function.levenshtein.php Edit -- https://master.php.net/note/edit/118694 Del: integrated -- https://master.php.net/note/delete/118694/integrated Del: useless -- https://master.php.net/note/delete/118694/useless Del: bad code -- https://master.php.net/note/delete/118694/bad+code Del: spam -- https://master.php.net/note/delete/118694/spam Del: non-english -- https://master.php.net/note/delete/118694/non-english Del: in docs -- https://master.php.net/note/delete/118694/in+docs Del: other reasons-- https://master.php.net/note/delete/118694 Reject -- https://master.php.net/note/reject/118694 Search -- https://master.php.net/manage/user-notes.php