- <?php 
-   
- class A{ 
-      public static function hello(){ 
-         echo 'hello'; 
-     } 
- } 
-   
- class B extends A{   
-     public static function ok(){ 
-         echo 'ok'; 
-     } 
-   
-     public function fprint(){ 
-         A::hello(); 
-         $this->ok(); 
-     }    
- } 
-   
- $obj = new B; 
- $obj->fprint(); 
- ?> 
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