PHP - how can I overload a function without using null values

Question

I want to have this interface:

interface Resource_Controller_Interface {
    public function index_get():stdClass;
    public function index_get(mixed $key):array;
    public function index_post():bool;
    public function index_put(mixed $key):bool;
    public function index_patch(mixed $key):bool;
    public function index_delete(mixed $key):bool;
}

Unfortunately, I cannot do two methods called 'index_get', even with different signatures.

I really want this interface to have these names though, is there a way I can do it? (using $key = null will not force implementation...)

possible duplicate of http://stackoverflow.com/questions/4697705/php-function-overloading — Jay Blanchard, Jun 23 '16 at 20:29
in general, cases like this are best handled by using both an interface and an abstract class, then you can have slightly modified version of the name in the interface ( to force implementation ) and then in the abstract class have a third function that sort of brings those together, if that makes sense. Just a thought. — ArtisticPhoenix, Jun 23 '16 at 21:13

score 1 · Accepted Answer · answered Jun 23 '16 at 20:32

1

You can make use of the func_num_args() and func_get_arg() to get the arguments passed, and use them normally.

This way the function name will be same but you will be able to do different things using some conditionals.

answered Jun 23 '16 at 20:32

Muhammad Sumon Molla Selim

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I can just do `null` in this case, but why isn't the different signature allowed? – Amit Jun 23 '16 at 20:40
Function signatures are based only on their names and do not include argument lists, so you cannot have two functions with the same name. – Muhammad Sumon Molla Selim Jun 23 '16 at 20:41
dont forget `function_get_args` ( with an s ) – ArtisticPhoenix Jun 23 '16 at 21:11

PHP - how can I overload a function without using null values

1 Answers1