How to return only named groups with preg_match or preg_match_all?

Question

Example:

$string = \"This is some text written on 2010-07-18.\";
preg_match(\'|(?\\d\\d\\d\\d-\\d\\d-\\d\\d)|i\', $string, $arr_result);
print_r(         


        

Answer 1

It also possible to unset all numeric indexes before return:

foreach (range(0, floor(count($arr_result) / 2)) as $index) {
    unset($arr_result[$index]);
}