3v4l.org

run code in 300+ PHP versions simultaneously
<?php $class_aliases = [ 'FooAlias' => 'Foo' ]; spl_autoload_register(function($class) use ($class_aliases) { if (isset($class_aliases[$class])) { class_alias($class_aliases[$class], $class); return true; } }); class Foo {} class Bar extends Foo {} class FooCreator { public function create(\FooAlias $foo) { echo "silly"; } } $foo = new Bar; $creator = new FooCreator(); $creator->create($foo);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught TypeError: FooCreator::create(): Argument #1 ($foo) must be of type FooAlias, Bar given, called in /in/kVDOf on line 29 and defined in /in/kVDOf:20 Stack trace: #0 /in/kVDOf(29): FooCreator->create(Object(Bar)) #1 {main} thrown in /in/kVDOf on line 20
Process exited with code 255.
Output for 7.0.0 - 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
Fatal error: Uncaught TypeError: Argument 1 passed to FooCreator::create() must be an instance of FooAlias, instance of Bar given, called in /in/kVDOf on line 29 and defined in /in/kVDOf:20 Stack trace: #0 /in/kVDOf(29): FooCreator->create(Object(Bar)) #1 {main} thrown in /in/kVDOf on line 20
Process exited with code 255.
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Catchable fatal error: Argument 1 passed to FooCreator::create() must be an instance of FooAlias, instance of Bar given, called in /in/kVDOf on line 29 and defined in /in/kVDOf on line 20
Process exited with code 255.
preferences:
229.5 ms | 402 KiB | 327 Q