3v4l.org

run code in 300+ PHP versions simultaneously
<?php function foo() { static $a = 0; echo $a; $a = $a + 1; } foo(); // 0 foo(); // 1 foo(); // 2
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.29, 8.0.0 - 8.0.19, 8.1.0 - 8.1.6
012

preferences:
44.29 ms | 409 KiB | 5 Q