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<?php interface Identity { /** * Named c * * @param string $identifier * @return self */ public static function createIdentity(): Identity; } class A implements Identity { public static function createIdentity(): Identity { return new self; } } $a = A::createIdentity(); var_dump($a);
based on rKJZA
Output for 7.0.0 - 7.2.0
object(A)#1 (0) { }
Output for 5.3.22 - 5.6.28
Parse error: syntax error, unexpected ':', expecting ';' or '{' in /in/UWtXC on line 12
Process exited with code 255.