Online PHP editor | refs for s8aVL

<?php function compare($a, $b) { // echo("$a : $b\n"); return ($a == $b ? 0 : 1); // return strcmp($a, $b); } $a = array('11', '21', '31', '41', '11'); $b = array('12', '22', '32', '42', '52', '11'); var_dump(array_udiff($a, $b, 'compare')); echo "\n\n"; $a_new = array_combine($a, array_fill(0, count($a), 1)); $b_new = array_combine($b, array_fill(0, count($b), 1)); var_dump(array_diff_uassoc($a_new, $b_new, 'compare')); echo "\n\n";