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<?php trait AbstractTrait { abstract public function selfReturner() : self; } trait ConcreteTrait { public function selfReturner() : self { return $this; } } class Test { use AbstractTrait; use ConcreteTrait; }
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
Output for 7.4.0 - 7.4.33
Fatal error: Declaration of ConcreteTrait::selfReturner(): ConcreteTrait must be compatible with AbstractTrait::selfReturner(): AbstractTrait in /in/Go6WO on line 8
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33
Fatal error: Declaration of ConcreteTrait::selfReturner(): ConcreteTrait must be compatible with AbstractTrait::selfReturner(): AbstractTrait in /in/Go6WO on line 13
Process exited with code 255.
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