3v4l.org

run code in 500+ PHP versions simultaneously
<?php function hello() { echo 'Hello, magic PHP!'; } function getCallback() { return 'hello'; } $result = ${'_'.!$_=getCallback()}();
Output for 7.1.25 - 7.1.28, 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 - 8.1.34, 8.2.0 - 8.2.32, 8.3.0 - 8.3.32, 8.4.1 - 8.4.23, 8.5.0 - 8.5.8
Hello, magic PHP!
preferences:
109.79 ms | 1448 KiB | 4 Q