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run code in 150+ php & hhvm versions
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<?php set_error_handler(function () {}); class Foo {} class Bar {} function test(Foo $instance) { var_dump($instance); } test(new Bar); test(123); test('Really?');
based on Kh06u
Output for 7.0.0 - 7.1.0
Fatal error: Uncaught TypeError: Argument 1 passed to test() must be an instance of Foo, instance of Bar given, called in /in/4j4aQ on line 10 and defined in /in/4j4aQ:8 Stack trace: #0 /in/4j4aQ(10): test(Object(Bar)) #1 {main} thrown in /in/4j4aQ on line 8
Process exited with code 255.
Output for 5.3.0 - 5.6.28, hhvm-3.12.0
object(Bar)#2 (0) { } int(123) string(7) "Really?"
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION, expecting ')' in /in/4j4aQ on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION, expecting ')' in /in/4j4aQ on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/4j4aQ on line 3
Process exited with code 255.