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<?php class Foo { public function display() { $cb = self::fooStaticMethod(); call_user_func($cb, $this); } public static function fooStaticMethod() { return function (Foo $foo) { $foo->fooMethod(); }; } private function fooMethod() { var_dump('foo'); } } class Bar extends Foo { } $foo = new Foo(); $foo->display(); $bar = new Bar(); $bar->display();
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 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 - 8.3.4, 8.3.6
string(3) "foo" string(3) "foo"
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 string(3) "foo" string(3) "foo"
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
string(3) "foo" Fatal error: Call to private method Foo::fooMethod() from context 'Bar' in /in/diTRh on line 15
Process exited with code 255.
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