3v4l.org

run code in 300+ PHP versions simultaneously
<?php $msg = '1234567890123456789012345678901234567890'; for ($i = 0; $i < strlen($msg); $i++) { echo $msg[$i]; if ($i && $i % 10 == 0) { echo '<br />'; } }
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, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 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 - 8.2.18, 8.3.0 - 8.3.6
12345678901<br />2345678901<br />2345678901<br />234567890
preferences:
226.13 ms | 405 KiB | 371 Q