Codeigniter php - 更新数据库多行
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【中文标题】Codeigniter php - 更新数据库多行【英文标题】：Codeigniter php - update the DataBase multi rows 【发布时间】：2020-06-11 07:08:20 【问题描述】：我有网上商店项目，当有人点击“购买”时 -> 他购买了商品。 现在，我保存了该项目（它的工作）并想从购物车更新我的数据库（需要更新这些项目的数量）。
Controller - 查看函数 insertOrderDataController 并将其插入该行
$updateCount = $this->product_model->updateItemCount($data,$counter);
<?php
class webs_controller extends CI_Controller
public function __construct()
parent::__construct();
$this->load->model('login_model');
$this->load->model('static_model');
$this->load->model('product_model');
$this->load->helper('url_helper');
$this->load->helper('form');
$this->load->library('session');
public function view($page = 'home')
if (!file_exists(APPPATH . 'views/pages/' . $page . '.php'))
// Whoops, we don't have a page for that!
show_404();
$data['title'] = ucfirst($page); // Capitalize the first letter
$this->load->view('templates/header', $data);
$this->load->view('pages/' . $page, $data);
$this->load->view('templates/footer', $data);
public function home()
$data['user'] = $this->session->all_userdata();
$this->load->view('templates/header', $data);
$this->load->view('pages/home', $data);
$this->load->view('templates/footer');
public function products()
$data['user'] = $this->session->all_userdata();
$this->load->view('templates/header', $data);
$this->load->view('pages/our_products', $data);
$this->load->view('templates/footer');
public function contact()
$data['user'] = $this->session->all_userdata();
$this->load->view('templates/header', $data);
$this->load->view('pages/contact', $data);
$this->load->view('templates/footer');
public function our_products()
$data['title'] = 'Produts';
$data['user'] = $this->session->all_userdata();
$totalBill['total'] = $this->product_model->CalculateTotalBill($data);
$data['product'] = $this->product_model->get_product();
$this->load->view('templates/header', $data);
$this->load->view('pages/our_products', $data);
$this->load->view('templates/footer');
public function calcit()
$data['user'] = $this->session->all_userdata();
$data['calc'] = $this->product_model->CalculateTotalBill($data);
public function google_pie_chart()
$data['title'] = 'statistic view';
$data['user'] = $this->session->all_userdata();
$data['year_pie'] = $this->static_model->get_Stat();
$this->load->view('templates/header', $data);
$this->load->view('pages/google_pie_chart', $data);
$this->load->view('templates/footer');
public function check($data, $counterCart)
$error = '';
$data['productDB'] = $this->product_model->get_product();
$lengthDB = count($data['productDB']);
for ($i = 0; $i < $counterCart; $i++)
$serialCartItem = intval($data[$i]['serial_number']);
$countCartItem = intval($data[$i]['count_purchase']);
for ($y = 0; $y < $lengthDB; $y++)
$serialDBItem = intval($data['productDB'][$y]['serial_number']);
$countDBItem = intval($data['productDB'][$y]['item_count']);
if ($serialDBItem == $serialCartItem)
if ($countDBItem <= $countCartItem)
$error.= "Not enough of this product in stock ! You will move to Homepage.";
return $error;
public function insertOrderDataController()
$counter = $this->input->post('counter');
$dataUser['user'] = $this->session->all_userdata();
$TheUsername = $dataUser['user']['User_name'];
for ($i = 0; $i < $counter; $i++)
$data[$i] = array(
'User_name' => $TheUsername,
'serial_number' => $this->input->post('serial_number[' . $i . ']'),
'count_purchase' => $this->input->post('count_purchase[' . $i . ']')
);
$error = $this->check($data, $counter);
if ($error == '')
$error_db = $this->product_model->insertOrderData($data);
if ($error_db == NULL)
$updateCount = $this->product_model->updateItemCount($data,$counter);
$data['info'] = array("message" => "1");
$messageAlert = 'Thanks you for purchase !';
echo "<script type='text/javascript'>alert('$messageAlert');</script>";
// $updateCount = $this->product_model->updateItemCount($data,$counter);
else
$data['info'] = array("message" => "Error. Registration faild: " . $error_db["message"]);
else
echo "<script type='text/javascript'>alert('$error');</script>";
redirect("webs_controller/home"); //if activ - there is not alert.
型号 -
<?php
class product_model extends CI_Model
public function __construct()
parent::__construct();
$this->load->database();
public function get_product()
$query = $this->db->query('SELECT * FROM `product`');
return $query->result_array();
public function CalculateTotalBill($username)
$user= $username['user']['User_name'];
$query = $this->db->query("SELECT bought_history.serial_number, bought_history.count_purchase, product.item_price FROM bought_history INNER JOIN product ON bought_history.serial_number=product.serial_number WHERE User_name IN (select User_name FROM bought_history WHERE User_name='$user')");
$temp = $query->result_array();
$total = 0;
for ($i = 0; $i < count($temp); $i++)
$total = $total + ($temp[$i]['count_purchase'] * $temp[$i]['item_price']);
echo "The current total pay : <b>",$total,"$</b>";
return $total;
public function updateItemCount($data,$counterCart)
$data['productDB'] = $this->product_model->get_product();
$lengthDB = count($data['productDB']);
for ($i = 0; $i < $counterCart; $i++)
$serialCartItem = intval($data[$i]['serial_number']);
$countCartItem = intval($data[$i]['count_purchase']);
for ($y = 0; $y < $lengthDB; $y++)
$serialDBItem = intval($data['productDB'][$y]['serial_number']);
$countDBItem = intval($data['productDB'][$y]['item_count']);
if ($serialDBItem == $serialCartItem)
$updatedCalc = $countDBItem-$countCartItem;
$query = $this->db->query('UPDATE `product` SET `item_count` = "'.$updatedCalc.'" WHERE `product`.`serial_number` = "'.$serialDBItem.'"');
$update = $this->db->mysql_query($query);
public function insertOrderData($data)
$this->db->db_debug = FALSE;
$error=NULL;
if (!$this->db->insert_batch('bought_history', $data))
$error=$this->db->error();
return $error;
数据库 - 需要更改：item_count
当我仅将一件商品插入购物车时，我成功更新了商品，但出现错误：
当我尝试更新多个项目时，只有第一个项目更新，我得到同样的错误。
谢谢，伊丹。
【问题讨论】：
【参考方案1】：删除线
$update = $this->db->mysql_query($query);
没有像mysql_query这样的Codeigniter功能，你为什么用这个？
【讨论】：
【参考方案2】：Codeigniter 上没有 mysql_query 方法。您可以像这样删除它并更新模型代码：
public function updateItemCount($data,$counterCart)
$data['productDB'] = $this->product_model->get_product();
$lengthDB = count($data['productDB']);
for ($i = 0; $i < $counterCart; $i++)
$serialCartItem = intval($data[$i]['serial_number']);
$countCartItem = intval($data[$i]['count_purchase']);
for ($y = 0; $y < $lengthDB; $y++)
$serialDBItem = intval($data['productDB'][$y]['serial_number']);
$countDBItem = intval($data['productDB'][$y]['item_count']);
if ($serialDBItem == $serialCartItem)
$updatedCalc = $countDBItem-$countCartItem;
$this->db->query('UPDATE `product` SET `item_count` = "'.$updatedCalc.'" WHERE `product`.`serial_number` = "'.$serialDBItem.'"');
【讨论】：
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