3v4l.org

run code in 300+ PHP versions simultaneously
<?php trait Test { private $bridge; public function implement() { if (is_callable([parent,'implement'])){ parent::implement(); } echo $this->foo; } } class A { private $foo = 'bar'; private $final = 1; public function __construct() { $this->implement(); } public function foo() { echo $this->bridge; } } class B extends A { use Test; private $foo = 'baz'; } new B();
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 "parent" in /in/r2laC:10 Stack trace: #0 /in/r2laC(27): B->implement() #1 /in/r2laC(42): A->__construct() #2 {main} thrown in /in/r2laC on line 10
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: Use of undefined constant parent - assumed 'parent' (this will throw an Error in a future version of PHP) in /in/r2laC on line 10 baz
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25
Notice: Use of undefined constant parent - assumed 'parent' in /in/r2laC on line 10 baz
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected T_STRING in /in/r2laC on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_STRING in /in/r2laC on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/r2laC on line 3
Process exited with code 255.
preferences:
185.73 ms | 401 KiB | 327 Q