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<?php class Foo { public function setHandler(callable $callable) { $callable(is_callable($callable)); } } class Bar extends Foo { public function setHandler($callable) { parent::setHandler($callable); } } $bar = new Bar(); $bar->setHandler('var_dump');
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
bool(true)
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33
Warning: Declaration of Bar::setHandler($callable) should be compatible with Foo::setHandler(callable $callable) in /in/ruPcK on line 15 bool(true)
Output for 5.4.8 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28
Strict Standards: Declaration of Bar::setHandler() should be compatible with Foo::setHandler(callable $callable) in /in/ruPcK on line 15 bool(true)
preferences:
223.67 ms | 402 KiB | 266 Q