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run code in 200+ php & hhvm versions
Bugs & Features
<?php interface TestInterface { public function test(): TestInterface; } trait TestTrait { public function test(): TestInterface { return $this; } } class TestClass implements TestInterface { use TestTrait; public function test2() : self { return $this; } } class TestClass2 extends TestClass {} $test = new TestClass; $test2 = new TestClass2; var_dump($test->test(), $test2->test(), $test2->test2());
based on nHTkN
Output for 7.0.0 - 7.3.0beta1
object(TestClass)#1 (0) { } object(TestClass2)#2 (0) { } object(TestClass2)#2 (0) { }
Output for 5.5.0 - 5.6.23
Parse error: syntax error, unexpected ':', expecting ';' or '{' in /in/Wq6oA on line 3
Process exited with code 255.