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<?php class A {} class B extends A {} class C { public function test() : A { return new A; } } class D extends C { // overriding method C::test() : A public function test() : B // Fatal error due to variance mismatch { return new B; } } ?>
Output for 7.4.3 - 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
Output for 7.0.0 - 7.0.1, 7.2.29 - 7.2.33, 7.3.16 - 7.3.33
Fatal error: Declaration of D::test(): B must be compatible with C::test(): A in /in/t2fYQ on line 21
Process exited with code 255.
Output for 5.5.24 - 5.5.30, 5.6.8 - 5.6.16
Parse error: syntax error, unexpected ':', expecting ';' or '{' in /in/t2fYQ on line 8
Process exited with code 255.
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148.3 ms | 402 KiB | 156 Q