structured programming - Calling Static Method of Class WITHOUT classname, PHP -

maybe it's foolish question, , want implement utils functions using oop in php, instead sp (strudtured programming), uses sp.

an example:

class {   public static function x() {     echo "using x method!";   } }

according static oop, use x function need use:

a::x();

but want use only:

x();

how can it? thk

function x() {    return a::x(); }

or can try do:

function x() {     return a::__function__(); }

KBPS