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<?php function userland_call_user_func($function, ...$args) { $class = isset(debug_backtrace()[1]['class']) ? debug_backtrace()[1]['class'] : null; return Closure::bind(function () use ($args, $function) { return $function(...$args); }, null, $class)->__invoke(); } class Test1 { private function foo() { echo new Exception; } public function callFoo($callfunc) { $new=new Test2; $callfunc(array($new, 'foo')); } } class Test2 { private function foo() { echo new Exception; } } $o = new Test1; $o->callFoo('userland_call_user_func'); $o->callFoo('call_user_func');
Output for 8.4.1 - 8.4.12
Fatal error: Uncaught Error: Call to private method Test2::foo() from scope Test1 in /in/6IKKl:7 Stack trace: #0 /in/6IKKl(8): Test1::{closure:userland_call_user_func():6}() #1 /in/6IKKl(8): Closure->__invoke() #2 /in/6IKKl(13): userland_call_user_func(Array) #3 /in/6IKKl(21): Test1->callFoo('userland_call_u...') #4 {main} thrown in /in/6IKKl on line 7
Process exited with code 255.
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25
Fatal error: Uncaught Error: Call to private method Test2::foo() from scope Test1 in /in/6IKKl:7 Stack trace: #0 /in/6IKKl(8): Test1::{closure}() #1 /in/6IKKl(8): Closure->__invoke() #2 /in/6IKKl(13): userland_call_user_func(Array) #3 /in/6IKKl(21): Test1->callFoo('userland_call_u...') #4 {main} thrown in /in/6IKKl on line 7
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Fatal error: Uncaught Error: Call to private method Test2::foo() from context 'Test1' in /in/6IKKl:7 Stack trace: #0 /in/6IKKl(8): Test1::{closure}() #1 /in/6IKKl(8): Closure->__invoke() #2 /in/6IKKl(13): userland_call_user_func(Array) #3 /in/6IKKl(21): Test1->callFoo('userland_call_u...') #4 {main} thrown in /in/6IKKl on line 7
Process exited with code 255.
Output for 5.6.8 - 5.6.28
Fatal error: Call to private method Test2::foo() from context 'Test1' in /in/6IKKl on line 7
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35
Parse error: syntax error, unexpected '.', expecting '&' or variable (T_VARIABLE) in /in/6IKKl on line 3
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '.', expecting '&' or T_VARIABLE in /in/6IKKl on line 3
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected '.', expecting '&' or T_VARIABLE in /in/6IKKl on line 3
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected '.', expecting '&' or T_VARIABLE or T_CONST in /in/6IKKl 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
Parse error: parse error, unexpected '.', expecting '&' or T_VARIABLE or T_CONST in /in/6IKKl on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `'&'' or `T_VARIABLE' or `T_CONST' in /in/6IKKl on line 3
Process exited with code 255.
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