Does static method in PHP have any difference with non-static method?

Question

class t {
    public function tt()
    {
        echo 1;
    }
}
t::tt();

See?The non-static function can also be called at class level.So what\'s

Answer 1

Besides the syntax and functional differences there is also a performance difference that matters.

You can refer to this more or less detailed comparison of static and non-static methods in PHP.