3v4l.org

run code in 300+ PHP versions simultaneously
<?php function test1($unset = false) { static $bar = 0; $bar++; echo $bar; if ($unset) { unset($bar); } } function test2($unset = false) { global $bar; if (!isset($bar)) { $bar = 0; } $bar++; echo $bar; if ($unset) { unset($bar); } } test1(); test1(); test1(true); test1(); echo "\n"; test2(); test2(); test2(true); test2();
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
1234 1234
preferences:
218.64 ms | 406 KiB | 424 Q