3v4l.org

run code in 300+ PHP versions simultaneously
<?php $s = "123, 123, 456, 456, 123, 123"; $arr = explode(",", $s); $str =""; Foreach(array_chunk($arr,2) as $sub){ $str .= trim(implode(",",$sub)) .",<br>\n"; } Echo $str;
Output for 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 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
123, 123,<br> 456, 456,<br> 123, 123,<br>
preferences:
125.52 ms | 403 KiB | 190 Q