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<?php interface PhoneInterface { public function add(): self; } trait PhoneTrait { public function add(): self { return $this; } } class A implements PhoneInterface { use PhoneTrait; } var_dump(new A());
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 - 8.3.26, 8.4.1 - 8.4.13
object(A)#1 (0) { }
Output for 7.3.0 - 7.3.33
Fatal error: Declaration of A::add(): A must be compatible with PhoneInterface::add(): PhoneInterface in /in/SJCf2 on line 16
Process exited with code 255.
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147.24 ms | 407 KiB | 5 Q