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run code in 200+ php & hhvm versions
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<?php declare(strict_types=1); class Foo { private $x; public function setX($x) : Foo { $this->x = $x; return $this; } public function getX() { return $this->x; } } function test($class) : object { return new $class(); } $x = test('Foo')->setX('test'); var_dump($x->getX());
based on C5LtJ
Output for 7.2.0
string(4) "test"
Output for 7.0.0 - 7.1.10
Fatal error: Uncaught TypeError: Return value of test() must be an instance of object, instance of Foo returned in /in/WCfQR:22 Stack trace: #0 /in/WCfQR(25): test('Foo') #1 {main} thrown in /in/WCfQR on line 22
Process exited with code 255.
Output for 5.3.20 - 5.6.21
Warning: Unsupported declare 'strict_types' in /in/WCfQR on line 3 Parse error: syntax error, unexpected ':', expecting ';' or '{' in /in/WCfQR on line 8
Process exited with code 255.