通过PHP函数传递数组

Question

Im sure there has to be a way to do this:

I want it so that If I call a function like this...

callFunction("var1","var2","var3");

the function 'callFunction' will turn these variables into an array i.e:

$array[0] = "var1";
$array[1] = "var2";
$array[2] = "var3";

I want it to generate this array no matter how many variables are listed when calling the function, is this possible?

Answer 1

You can simply do the following:

function callFunction() {
    $arr = func_get_args();
    // Do something with all the arguments
    // e.g. $arr[0], ...
}

func_get_args will return all the parameters passed to a function. You don't even need to specify them in the function header.

func_num_args will yield the number of arguments passed to the function. I'm not entirely sure why such a thing exists, given that you can simple count(func_get_args()), but I suppose it exist because it does in C (where it is actually necessary).

If you ever again look for this kind of feature in a different language, it is usually referred to as Variadic Function, or "varargs" if you need to Google it quickly :)