ถามเรื่องการ update codeigniter หลาย table หน่อยครับ

function receive_mobile($data){
		$strSQL = "UPDATE [phone] SET ";
		$strSQL .="borrow = '0' ";
		$strSQL .="WHERE id = '".$data["id_phone"]."' ";
		$objQuery = mssql_query($strSQL);
		if($objQuery)
		{
			$remark = "UPDATE [borrow_phone] SET ";
			$remark .="remark = '".$data["remark"]."' ";
			$remark .=", date_receive = '".$data["date"]."' ";
			$remark .=", borrow = '0' ";
			$remark .="WHERE id = '".$data["id_borrow_phone"]."' ";
			$checkremark = mssql_query($remark);
			if($checkremark)
			{
				$borrow = "UPDATE [borrow] SET ";
				$borrow .="sender = '".$data["sender"]."' ";
				$borrow .=", receive = '".$data["receive"]."' ";
				$borrow .="WHERE id = '".$data["id_borrow"]."' ";
				$checkborrow = mssql_query($borrow);
				if($checkborrow)
				{
					return true;
				}
				else
				{
					return false;
				}
			}
			else
			{
				echo "Error Save [".$remark."]";
			}
		}
		else
		{
			echo "Error Save [".$strSQL."]";
		}
		
	}

public function receive_mobile()
	{	
			$data['id_phone']= $this->input->post('id');
			$data['id_borrow']= $this->input->post('id');
			$data['id_borrow_phone']= $this->input->post('id');
			$data['date']= $this->input->post('date_receive');
			$data['sender']= $this->input->post('sender');
			$data['receive']= $this->input->post('receive');
			$data['remark']= $this->input->post('remark');
			$create = $this->phone_system_model->receive_mobile($data);
			if($create){
					$this->index();			
				}else{
					error_log("Unsuccess");
				}
	}

 <input type="hidden" value="<?=$borrow_phones->id;?>" name="id_borrow_phone"> 
 <input type="hidden" value="<?=$id_phone;?>" name="id_phone"> 
<input type="hidden" value="<?=$borrows->id;?>" name="id_borrow">    
<select name="sender" style="width:200px;">
														<option value="">--- เลือก ---</option>
                                                        <?PHP
														foreach($member as $members):
														?>
                                                        <option value="<?=$members->id;?>"><?=iconv('tis-620','utf-8',$members->name)." ".iconv('tis-620','utf-8',$members->lastname);?></option>
                                                        <?PHP
														endforeach;
														?>
                                                    </select>
<select name="receive" style="width:200px;">
														<option value="">--- เลือก ---</option>
                                                        <?PHP
														foreach($member as $members):
														if($members->team == "1"):
														?>
                                                        <option value="<?=$members->id;?>"><?=iconv('tis-620','utf-8',$members->name)." ".iconv('tis-620','utf-8',$members->lastname);?></option>
                                                        <?PHP
														endif;
														endforeach;
														?>
                                                    </select>
                                                    </td>
                                                    <td><input type="text" class="datepicker" id="date<?=$borrow_phones->id;?>" name="date<?=$borrow_phones->id;?>" style="width:75px;"></td>
                                                    <td><input type="text" name="remark" size="50" maxlength="250" ></td>

<a class="btn btn-info" href="<?php echo site_url("phone_system/receive_mobile/".$id_phone ); ?>">
                                                            <i class="icon-edit icon-white"></i>  
                                                            Receive                                            
                                                        </a>