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<?php trait TestTrait { public function execute(int $id) { return $id + 1; } } class TestClass { use TestTrait { execute as executeTrait; } function __construct() { var_dump($this->execute(1)); var_dump($this->executeTrait(2)); } } new TestClass();
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, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
int(2) int(3)
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Catchable fatal error: Argument 1 passed to TestClass::execute() must be an instance of int, integer given, called in /in/ANmkM on line 19 and defined in /in/ANmkM on line 5
Process exited with code 255.
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