3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { public static function foo() { static $arr = array(); $arr[] = 2; return $arr; } } class C extends A { } printf("%s\n", json_encode(A::foo())); printf("%s\n", json_encode(A::foo())); printf("%s\n", json_encode(C::foo())); eval('class B extends A{}'); printf("\nIt would be reasonable for B::foo() to be [2], but the real value is below"); printf("%s\n", json_encode(B::foo()));
Output for 8.1.0 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
[2] [2,2] [2,2,2] It would be reasonable for B::foo() to be [2], but the real value is below[2,2,2,2]
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 [2] [2,2] [2,2,2] It would be reasonable for B::foo() to be [2], but the real value is below[2,2,2,2]
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.6 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30
[2] [2,2] [2] It would be reasonable for B::foo() to be [2], but the real value is below[2,2,2]

preferences:
136.05 ms | 402 KiB | 165 Q