3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo '<table border="1"><tr>'; foreach(range(1,20) as $key => $row) { echo '<td>'. $row . '</td>'; if(++$key % 5 == 0 ) echo '</tr><tr>'; } echo '</td></table>';

preferences:
40.47 ms | 402 KiB | 5 Q