3v4l.org

run code in 500+ PHP versions simultaneously
<?php $output=[]; $output[test('t1')] = test('t2'); function test($str){ echo $str,PHP_EOL; return rand(10, 100); }
Output for 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 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 - 8.2.4
t1 t2
preferences:
27.69 ms | 1152 KiB | 7 Q