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 - 7.4.30, 8.0.0 - 8.0.23, 8.1.0 - 8.1.10
int(0) int(0) int(0) int(0)

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18.68 ms | 410 KiB | 5 Q