Static and Non-Static Calling in PHP

Question

ok I have this code, that I'm studying

 class scope{

    function printme(){
        return "hello";
    }

    public static function printme(){
        return "hello"; 
    }

 }

$s = new scope();
echo $s->printme(); //non-static call
echo "<br>";
echo scope::printme(); //static call

Now, this is not really the code of my project but these are the things I want to do

1. I want to create a class the will contain static and non-static functions.
2. I want a function to be available both on static and non-static calls.

As non-static function has a lot of operations on it, I also need to call it as a static function so that I will not need to instantiate the class. Is this possible? or I really needed to rewrite the function to another function or class?

NOTE: tell me if I'm doing some bad programming already.

Answer 1

Here is the rule:

A static method can be used in both static method and non-static method.

A non-static method can only be used in a non-static method.

Answer 2

If the instance of your class is rarely needed, you can have the static method create an instance, call the non-static method and return the value.

class Scope {
    public function mynonstatic() {
    }

    public static function mystatic() {
        $s = new Scope();
        return $s->mynonstatic();
    }
}

Remember that a static method is really just a global function with reduced scope. They are useful, but are should not be created without good reason.