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<?php interface MyInterface { } class MyClass implements MyInterface { } $a = new MyClass; $b = new MyClass; $c = 'MyClass'; $d = 'NotMyClass'; var_dump($a instanceof $b); // $b is an object of class MyClass var_dump($a instanceof $c); // $c is a string 'MyClass' var_dump($a instanceof $d); // $d is a string 'NotMyClass'
Output for 5.1.1 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
bool(true) bool(true) bool(false)
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/7hLea on line 17
Process exited with code 255.
Output for 5.0.0 - 5.0.5
bool(true) bool(true) Fatal error: Class 'NotMyClass' not found in /in/7hLea on line 17
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING in /in/7hLea on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_STRING in /in/7hLea on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/7hLea on line 2
Process exited with code 255.
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278.59 ms | 401 KiB | 458 Q