3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php interface Bar { } class Foo implements Bar { } var_dump( is_subclass_of('Foo', 'Bar'), is_a('Foo', 'Bar') );
Output for 5.3.9 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
bool(true) bool(false)
Output for 5.3.7 - 5.3.8
bool(true) bool(true)
Output for 5.3.0 - 5.3.6
bool(false) bool(false)
Output for 5.0.0 - 5.2.17
Strict Standards: is_a(): Deprecated. Please use the instanceof operator in /in/Be99R on line 8 bool(false) bool(false)
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING in /in/Be99R 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/Be99R on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/Be99R on line 2
Process exited with code 255.