3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = 'a,b,c(a,b,c),d(a,b(a,b)),e'; $temp = preg_split('/(\w),/', $str, -1, PREG_SPLIT_DELIM_CAPTURE); print_r($temp); foreach($temp as $tok){ }
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Array ( [0] => [1] => a [2] => [3] => b [4] => c( [5] => a [6] => [7] => b [8] => c),d( [9] => a [10] => b( [11] => a [12] => b)),e )

preferences:
205.59 ms | 406 KiB | 312 Q