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<?php class Test { public function hello(): string { return "Hello World!"; } } class Test2 { public function hello(): string { return "Test2 Hello World!"; } } function bla(): Test { return new Test2(); } $test = bla(); echo $test->hello();
based on AWQMg
Output for 7.0.0 - 7.2.0
Fatal error: Uncaught TypeError: Return value of bla() must be an instance of Test, instance of Test2 returned in /in/bsNSR:16 Stack trace: #0 /in/bsNSR(19): bla() #1 {main} thrown in /in/bsNSR on line 16
Process exited with code 255.
Output for 5.3.20 - 5.6.28
Parse error: syntax error, unexpected ':', expecting ';' or '{' in /in/bsNSR on line 4
Process exited with code 255.