<?php
$input_line = 'hhh (12) 5cb (jkl) jj';
print_r($output_array[1]); // array of all the capture group 1
PD9waHAKCiRpbnB1dF9saW5lID0gJ2hoaCAoMTIpIDVjYiAoamtsKSBqaic7CnByZWdfbWF0Y2hfYWxsKCIvXCgoLio/KVwpLyIsICRpbnB1dF9saW5lLCAkb3V0cHV0X2FycmF5KTsKcHJpbnRfcigkb3V0cHV0X2FycmF5WzFdKTsgLy8gYXJyYXkgb2YgYWxsIHRoZSBjYXB0dXJlIGdyb3VwIDE=