Online PHP editor | output for tbV2n

<?php $compare = array( '1.23 biz', '1.12 foobar', 'bat', 'asdf', ); /** * Compare on title. */ function title_compare($x, $y) { $pattern = '/^\d+\..*$/i'; if (preg_match($pattern, $x['title'])) { // this preg_match causes the warning. $x_float = floatval($x['title']); $y_ if (floatval($x['title']) == floatval($y['title'])) return 0; elseif (floatval($x['title']) < floatval($y['title'])) return -1; else return 1; } else { if ($x['title'] == $y['title']) return 0; elseif ($x['title'] < $y['title']) return -1; else return 1; } } var_dump($compare); var_dump(uasort($items, 'title_compare'));