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run code in 150+ php & hhvm versions
Bugs & Features
<?php interface I {} class A implements I {} class B extends A {} var_dump(is_subclass_of('A', 'I')); var_dump(is_subclass_of('B', 'I')); var_dump(is_subclass_of('B', 'A'));
Output for 5.3.7 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
bool(true) bool(true) bool(true)
Output for 5.0.3 - 5.3.6
bool(false) bool(true) bool(true)
Output for 5.0.0 - 5.0.2
bool(false) bool(false) bool(false)
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING in /in/OYOJY on line 3
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/OYOJY on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/OYOJY on line 3
Process exited with code 255.