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<?php class Fruit {} class Banana extends Fruit {} class Lemon extends Fruit {} class Base { public function methodOne(Banana $x) {} public function methodTwo(array $x) {} } class OverrideNullable extends Base { public function methodOne(Banana $x = null) {} public function methodTwo(array $x = null) {} } class OverrideParent extends Base { public function methodOne(Fruit $x) {} } class OverrideWildcard extends Base { public function methodOne($x) {} public function methodTwo($x) {} } (new Base())->methodOne(new Banana()); (new Base())->methodTwo([]); (new OverrideNullable())->methodOne(); (new OverrideNullable())->methodTwo(); (new OverrideParent())->methodOne(new Lemon()); (new OverrideWildcard())->methodOne(''); (new OverrideWildcard())->methodTwo(''); echo "Output intentionally left blank." , PHP_EOL;
Output for 8.4.1 - 8.4.12
Deprecated: OverrideNullable::methodOne(): Implicitly marking parameter $x as nullable is deprecated, the explicit nullable type must be used instead in /in/F9QQE on line 15 Deprecated: OverrideNullable::methodTwo(): Implicitly marking parameter $x as nullable is deprecated, the explicit nullable type must be used instead in /in/F9QQE on line 16 Output intentionally left blank.
Output for 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25
Output intentionally left blank.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33
Warning: Declaration of OverrideParent::methodOne(Fruit $x) should be compatible with Base::methodOne(Banana $x) in /in/F9QQE on line 22 Output intentionally left blank.
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