3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { public function foo() { $f = function() { $name = "this"; var_dump($$name); }; $f(); }} $a = new A; $a->foo(); sort($a = array(2, 1)); array(&${$name});
Output for 8.3.0 - 8.3.6
object(A)#1 (0) { } Fatal error: Uncaught Error: sort(): Argument #1 ($array) could not be passed by reference in /in/AgkSG:3 Stack trace: #0 {main} thrown in /in/AgkSG on line 3
Process exited with code 255.
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18
object(A)#1 (0) { } Fatal error: Uncaught Error: sort(): Argument #1 ($array) cannot be passed by reference in /in/AgkSG:3 Stack trace: #0 {main} thrown in /in/AgkSG on line 3
Process exited with code 255.
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
object(A)#1 (0) { } Notice: Only variables should be passed by reference in /in/AgkSG on line 3 Notice: Undefined variable: name in /in/AgkSG on line 4
Output for 7.3.32 - 7.3.33
object(A)#1 (0) { }
Output for 7.0.0 - 7.0.33
Notice: Undefined variable: this in /in/AgkSG on line 2 NULL Notice: Only variables should be passed by reference in /in/AgkSG on line 3 Notice: Undefined variable: name in /in/AgkSG on line 4
Output for 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: this in /in/AgkSG on line 2 NULL Strict Standards: Only variables should be passed by reference in /in/AgkSG on line 3 Notice: Undefined variable: name in /in/AgkSG on line 4
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/AgkSG on line 2
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/AgkSG on line 2
Process exited with code 255.
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/AgkSG on line 2
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/AgkSG on line 2
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/AgkSG on line 2
Process exited with code 255.

preferences:
307.88 ms | 401 KiB | 460 Q