3v4l.org

run code in 300+ PHP versions simultaneously
<?php class foo { function bar() { $x = array(); echo constant( 'self:' . ':xx' ); } } $a = new foo; $a->bar();
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught Error: Undefined constant self::xx in /in/7tD24:5 Stack trace: #0 /in/7tD24(5): constant('self::xx') #1 /in/7tD24(10): foo->bar() #2 {main} thrown in /in/7tD24 on line 5
Process exited with code 255.
Output for 4.3.2 - 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, 5.3.3 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 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
Warning: constant(): Couldn't find constant self::xx in /in/7tD24 on line 5
Output for 5.3.0 - 5.3.2
Fatal error: Undefined class constant 'self::xx' in /in/7tD24 on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Warning: constant() [http://www.php.net/function.constant]: Couldn't find constant self::xx in /in/7tD24 on line 5

preferences:
279.95 ms | 401 KiB | 402 Q