Online PHP editor | refs for qssha

<?php function tryGetPhoneNumber($input, &$phoneNumber) { if (preg_match('/(?<phoneNumber>\d{3}-\d{3}-\d{4}/)', $input, $match)) { $phoneNumber = $match['phoneNumber']; return true; } $phoneNumber = null; return false; } $phoneNumber = null; if (tryGetPhoneNumber("I'm going to call 555-123-4567 tomorrow.", $phoneNumber)) { var_dump($phoneNumber); exit; } echo 'No phone number.';