Online PHP editor | refs for drroH

<?php class User { public function getZipCode($value) { return $value; } } $user = new User(); if (preg_match("/^[0-9]+$/",$user->getZipCode('489756'))) { $data['str'] = $user->getZipCode('489756'); } if (preg_match("/^[0-9]+$/",$user->getZipCode(489756))) { $data['int'] = $user->getZipCode(489756); } if (preg_match("/^[0-9]+$/",$user->getZipCode('489756d'))) { $data['badStr1'] = $user->getZipCode('489756d'); } if (preg_match("/^[0-9]+$/",$user->getZipCode(NULL))) { $data['null'] = $user->getZipCode(NULL); } var_dump($data);