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<?php class Foo { static function bar() { echo 'baz'; } } class Ex { public $a; public function __construct() { $this->a = 'Foo'; } public function doIt() { ${$this->a}::bar(); } } $a = new Ex(); $a->doIt();
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Warning: Undefined variable $Foo in /in/IeLYZ on line 18 Fatal error: Uncaught Error: Class name must be a valid object or a string in /in/IeLYZ:18 Stack trace: #0 /in/IeLYZ(23): Ex->doIt() #1 {main} thrown in /in/IeLYZ on line 18
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.6 - 7.2.33, 7.3.12 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined variable: Foo in /in/IeLYZ on line 18 Fatal error: Uncaught Error: Class name must be a valid object or a string in /in/IeLYZ:18 Stack trace: #0 /in/IeLYZ(23): Ex->doIt() #1 {main} thrown in /in/IeLYZ on line 18
Process exited with code 255.
Output for 7.3.32 - 7.3.33
Fatal error: Uncaught Error: Class name must be a valid object or a string in /in/IeLYZ:18 Stack trace: #0 /in/IeLYZ(23): Ex->doIt() #1 {main} thrown in /in/IeLYZ on line 18
Process exited with code 255.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28
Notice: Undefined variable: Foo in /in/IeLYZ on line 18 Fatal error: Class name must be a valid object or a string in /in/IeLYZ on line 18
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_PAAMAYIM_NEKUDOTAYIM in /in/IeLYZ on line 18
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_PAAMAYIM_NEKUDOTAYIM in /in/IeLYZ on line 18
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STATIC, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/IeLYZ on line 5
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_STATIC, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/IeLYZ on line 5
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/IeLYZ on line 5
Process exited with code 255.

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