3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo "A" ^ "a" ^ "a"; echo "A" ^ "a" ^ "A"; // Aa;
Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
Aa
preferences:
101.14 ms | 1373 KiB | 4 Q