3v4l.org

run code in 300+ PHP versions simultaneously
<?php for ($a=0,$b=0,$c=0,$d=0;;) { break; } var_dump($a,$b,$c,$d);
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.31, 8.2.0 - 8.2.27, 8.3.0 - 8.3.15, 8.4.1 - 8.4.2
int(0) int(0) int(0) int(0)
preferences:
44.32 ms | 408 KiB | 5 Q