Beispiel #1
0
 function common_items(&$vector)
 {
     // for compatibility, we don't use pass by reference
     //$keys = array_intersect_key(&$this->values, &$vector->values);
     $keys = array_intersect_key($this->values, $vector->values);
     if (count($keys) == 0) {
         return NULL;
     }
     $array_a = array();
     $array_b = array();
     foreach ($keys as $key => $value) {
         $array_a[] = $this->values[$key];
         $array_b[] = $vector->values[$key];
     }
     $subset = array();
     $subset[] = Vector::wrap('RealVector', $array_a);
     $subset[] = Vector::wrap('RealVector', $array_b);
     return $subset;
 }