Online PHP editor | refs for 5mWSi

<?php $lines = [ "1849781487", "1838433023", "1855575775", "1825054296", "1868575843", "1800003509", "1781354776", "1650813649", "1762706044", "1688111114", "1669462381", "1632164916" ]; $searchword = '18'; $matches = array(); foreach($lines as $k=>$v) { if(preg_match("/^$searchword/i", $v)) { $matches[$k] = $v; } } print_r($matches);