3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { public function foop() { var_dump($this->$foo); } } class Bar extends Foo { private $foo = "test"; } class Baz extends Foo { protected $foo = "test"; } //$a = new Bar; //$a->foop(); $b = new Baz; $b->foop();
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
Warning: Undefined variable $foo in /in/XoXFY on line 5 Warning: Undefined property: Baz::$ in /in/XoXFY on line 5 NULL
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined variable: foo in /in/XoXFY on line 5 Notice: Undefined property: Baz::$ in /in/XoXFY on line 5 NULL
Output for 7.3.32 - 7.3.33
NULL
Output for 7.0.0 - 7.0.33
Notice: Undefined variable: foo in /in/XoXFY on line 5 Fatal error: Uncaught Error: Cannot access empty property in /in/XoXFY:5 Stack trace: #0 /in/XoXFY(21): Foo->foop() #1 {main} thrown in /in/XoXFY on line 5
Process exited with code 255.
Output for 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, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Notice: Undefined variable: foo in /in/XoXFY on line 5 Fatal error: Cannot access empty property in /in/XoXFY on line 5
Process exited with code 255.
Output for 5.0.4
Notice: Undefined variable: foo in /in/XoXFY on line 5 Notice: Undefined property: Baz::$ in /in/XoXFY on line 5 NULL
Output for 5.0.0 - 5.0.3
Notice: Undefined variable: foo in /in/XoXFY on line 5 Notice: Undefined property: Baz::$ in /in/XoXFY on line 5 NULL
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/XoXFY on line 4
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
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/XoXFY on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/XoXFY on line 4
Process exited with code 255.

preferences:
105.25 ms | 2699 KiB | 4 Q