3v4l.org

run code in 300+ PHP versions simultaneously
<?php print_r(unpack("C*", "Öé"));
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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Array ( [1] => 195 [2] => 150 [3] => 195 [4] => 169 )

preferences:
225.69 ms | 403 KiB | 284 Q