Jak połączyć klasę SQL z klasą Eps tak by metody z klasy SQL wykonywały zapytania z klasy eps czyli

update_point() i delete_point()

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$user_point = 2;
 
class sql { //dopisujemy parę funkcji do klasy Eps
 
	public function update(Eps $update) {
	   return parent::mysql_query($update->update_point());
	}
 
	public function remove(Eps $remove) {
	   return parent::mysql_query($remove->delete_point());
	}
}
 
 
abstract class Eps_Cat_Point {
  protected $eps_cat_point = array('A' => 3, 'C' => 5, 'D' => 2);
 
  // Dane beda pochodzic z bazy
  // Litera to identyfikator kategorii za co dostaje sie pkt np A za artykul 3 pkt.
 
}
 
class Eps extends Eps_Cat_Point {
 
  public $user_id;
  public $cat_point;
  public $query;
  public $method_name;
 
  public function __construct($user_id, $cat_point, $method_name) {
 
    if(is_int($user_id) && preg_match("/^[A-Z]{1}$/", $cat_point) && is_string($method_name)){
      $this->user_id = $user_id;
      $this->cat_point = $cat_point;
 
      if(method_exists(__CLASS__, $method_name)){
        $this->method_name = $method_name;
 
 
        ///$sql = new sql($this); jak tutaj dodac kod z klasy sql
 
 
	call_user_func(array(__CLASS__, $this->method_name));
 
      }
 
    } else {
      throw new Exception("Niepoprawna wartosc podanych parametrow");
    }
 
  }
 
  public function check_point(){
 
    if($user_point < $this->eps_cat_point[$this->cat_point]){
      return true;
    } else {
      return false;
    }
 
  }
 
  public function update_point(){
    $this->query = "UPDATE tabela SET user_point=user_point+'".$this->eps_cat_point[$this->cat_point]."' WHERE user_id='".$this->user_id."'";
    return $this->query;
  }
 
  public function delete_point(){
 
    if($this->check_point()){
      $this->query = "UPDATE tabela SET user_point=0 WHERE user_id='".$this->user_id."'";
      return $this->query;      
    } else {
      $this->query = "UPDATE tabela SET user_point=user_point-'".$this->eps_cat_point[$this->cat_point]."' WHERE user_id='".$this->user_id."'";
      return $this->query;
    }
  }
 
}
 
 
$eps = new Eps(12, 'A', 'update_point');
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.

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class sql extends eps {
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