3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { private static $x = 1; } class B extends A { function bar() { var_dump(self::$x); } }; class C extends A { function bar() { var_dump(A::$x); } }; $a = new B; $a->bar(); $b = new C; $b->bar();
Output for 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13
Fatal error: Uncaught Error: Cannot access private property B::$x in /in/4XheY:9 Stack trace: #0 /in/4XheY(21): B->bar() #1 {main} thrown in /in/4XheY on line 9
Process exited with code 255.
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33
Fatal error: Uncaught Error: Cannot access property B::$x in /in/4XheY:9 Stack trace: #0 /in/4XheY(21): B->bar() #1 {main} thrown in /in/4XheY on line 9
Process exited with code 255.
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.38
Fatal error: Cannot access property B::$x in /in/4XheY on line 9
Process exited with code 255.
preferences:
139.26 ms | 409 KiB | 5 Q