<?php 
 
class Something { 
    static  $protected = false; 
     
    static   function helloworld() { 
        static  $var; 
        echo 'Hello world!'; 
         
        if (true) { 
            static ::  helloworld(); 
            static  ::  $protected = true; 
             
             
        } 
         
    } 
 
    static public function wrongKeywordsOrder() { 
         
    } 
 
    static protected function wrongKeywordsOrder1() { 
         
    } 
 
    static private function wrongKeywordsOrder2() { 
         
    } 
 
    public static function rightKeywordsOrder() { 
         
    } 
 
    protected static function rightKeywordsOrder1() { 
         
    } 
 
    private static function rightKeywordsOrder2() { 
         
    } 
} 
 
Something ::helloworld(); 
 
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