3v4l.org

run code in 300+ PHP versions simultaneously
<?php class foo { private function do_something (bool $str) { echo "private function"; } public function call_something(foo $obj) { call_user_func([$obj, 'do_something'], true); } } class bar extends foo { public function do_something (string $value) { echo "subclass"; } } $a = new foo(); $b = new bar(); $a->call_something($b);
Output for 7.0.10 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 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
private function
Output for 7.0.0 - 7.0.9
Warning: Declaration of bar::do_something(string $value) should be compatible with foo::do_something(bool $str) in /in/uK5Hc on line 18 private function
Output for 5.6.24 - 5.6.40
Catchable fatal error: Argument 1 passed to foo::do_something() must be an instance of bool, boolean given in /in/uK5Hc on line 5
Process exited with code 255.
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.23
Strict Standards: Declaration of bar::do_something() should be compatible with foo::do_something(bool $str) in /in/uK5Hc on line 18 Catchable fatal error: Argument 1 passed to foo::do_something() must be an instance of bool, boolean given in /in/uK5Hc on line 5
Process exited with code 255.
preferences:
245.91 ms | 402 KiB | 326 Q