3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string='Demo #1: (11 steps)[1] and Demo #2: (35 steps)[2]'; var_export(preg_match_all('~\(([^)]*)\)\[([^\]]*)]~',$string,$out)?array_slice($out,1):[]);
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
array ( 0 => array ( 0 => '11 steps', 1 => '35 steps', ), 1 => array ( 0 => '1', 1 => '2', ), )
preferences:
48.49 ms | 408 KiB | 5 Q