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<?php interface I { public function get_i(); } class II implements I { public function get_i() { return 'II'; } } var_dump(is_subclass_of('II', 'I')); var_dump(class_implements('II'));
Output for 5.3.7 - 7.1.0
bool(true) array(1) { ["I"]=> string(1) "I" }
Output for 5.1.0 - 5.3.6
bool(false) array(1) { ["I"]=> string(1) "I" }
Output for 5.0.0 - 5.0.5
bool(false) Warning: class_implements() expects parameter 1 to be object, string given in /in/WrZcM on line 15 bool(false)
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING in /in/WrZcM 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/WrZcM on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/WrZcM on line 3
Process exited with code 255.