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<?php function call($o, $a, $r, $context) { $ref = new ReflectionFunction($o); return $ref->invokeArgs($a); } class A { protected $a = 5; public function __invoke() { $f = function () { return $this->a; }; return call($f, array(), array(), isset($this) ? $this : null); } } $a = new A; var_dump($a());
Output for 7.2.12 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
int(5)
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.11
Fatal error: Uncaught Error: Using $this when not in object context in /in/0QhE2:15 Stack trace: #0 [internal function]: A::{closure}() #1 /in/0QhE2(6): ReflectionFunction->invokeArgs(Array) #2 /in/0QhE2(17): call(Object(Closure), Array, Array, Object(A)) #3 /in/0QhE2(22): A->__invoke() #4 {main} thrown in /in/0QhE2 on line 15
Process exited with code 255.
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
Fatal error: Using $this when not in object context in /in/0QhE2 on line 15
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_FUNCTION in /in/0QhE2 on line 14
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/0QhE2 on line 14
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/0QhE2 on line 11
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/0QhE2 on line 11
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/0QhE2 on line 11
Process exited with code 255.
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