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run code in 150+ php & hhvm versions
Bugs & Features
<?php interface Foo { function baz($moo); } abstract class Bar implements Foo {} class_alias('Bar', 'Bar53'); eval('abstract class Bar52 extends Bar {}'); class Test53 extends Bar53 { function baz($moo) {} } class Test52 extends Bar52 { function baz($moo) {} } var_dump(Test52 instanceof Foo); var_dump(Test53 instanceof Foo);
Output for 5.3.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
Notice: Use of undefined constant Test52 - assumed 'Test52' in /in/03SAi on line 13 bool(false) Notice: Use of undefined constant Test53 - assumed 'Test53' in /in/03SAi on line 14 bool(false)
Output for hhvm-3.10.0
Notice: Use of undefined constant Test52 - assumed 'Test52' in /in/03SAi on line -1 bool(false) Notice: Use of undefined constant Test53 - assumed 'Test53' in /in/03SAi on line -1 bool(false)
Output for 5.0.0 - 5.2.17
Fatal error: Call to undefined function class_alias() in /in/03SAi on line 7
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING in /in/03SAi on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_STRING in /in/03SAi on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/03SAi on line 2
Process exited with code 255.