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<?php declare(strict_types = 1); phpversion() >= "7.0.0" or die(); class FooBar { public $prop = '123'; } class BarFoo {} function test () : FooBar { return new FooBar; } function test1 () : BarFoo { return new FooBar; } var_dump(test()); var_dump(test1());
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.13, 7.3.0
object(FooBar)#1 (1) { ["prop"]=> string(3) "123" } Fatal error: Uncaught TypeError: Return value of test1() must be an instance of BarFoo, instance of FooBar returned in /in/3hMJU:17 Stack trace: #0 /in/3hMJU(22): test1() #1 {main} thrown in /in/3hMJU on line 17
Process exited with code 255.
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.38
Warning: Unsupported declare 'strict_types' in /in/3hMJU on line 2 Parse error: syntax error, unexpected ':', expecting '{' in /in/3hMJU on line 12
Process exited with code 255.
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