3v4l.org

run code in 300+ PHP versions simultaneously
<?php function test1($unset = false) { // PHP establishes an internal static var and binds // the local name 'bar' to it static $bar = 0; // unlink the name 'bar' from the internal static var unset($bar); // we can reuse $bar! $bar = "reusing!"; echo $bar; // rebind 'bar' to the internal static var! static $bar; $bar++; echo $bar; } test1(); test1(); test1(); test1();
Output for 8.3.0 - 8.3.6
Fatal error: Duplicate declaration of static variable $bar in /in/Jl1l6 on line 16
Process exited with code 255.
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, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 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
reusing!1reusing!2reusing!3reusing!4
preferences:
211.27 ms | 405 KiB | 342 Q