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PHP:
скопировать код в буфер обмена
 
  function g_add($G_Id=0,$G_Name){
    $this->set_str_c($G_Name);
    if ($this->is_g_correct($G_Name)){
       $G_Id=$this->nextid("G_Id");
       $this->query("INSERT INTO groups (G_Id,G_Name) VALUES ($G_Id,'$G_Name')");
       return true;
    }else{
      return false;
    }
  }//g_add
  function g_upd($G_Id,$G_Name){
    $this->set_str_c($G_Name);
    if ($this->is_g_correct($G_Name)and $this->is_int_c($G_Id)){
       $this->query("UPDATE groups SET G_Name='$G_Name' WHERE G_Id=$G_Id");
       return true;
    }else{
      return false;
    }
  }//g_upd
  
  function g_del($G_Id){
    if (!$this->is_int_c($G_Id))
       return false;
    $this->lock(array("users","results","time_table","groups"));
    $this->query("DELETE FROM results WHERE R_G_Id=$G_Id");
    $this->query("DELETE FROM users WHERE U_G_Id=$G_Id");
    $this->query("DELETE FROM time_table WHERE T_G_Id=$G_Id");
    $this->query("DELETE FROM groups WHERE G_Id=$G_Id");
    $this->unlock();
    return true;
  }//g_del
}