Question

重复编辑：这个问题有所不同，因为我正在尝试返回一个特定值，即在另一个函数INSERT语句中用作外键的主键ID，同样的行动。 “重复”问题没有回答这个问题，而只是说明了如何从函数中获取返回值。不是如何获取它并将其正确插入另一个函数prepare语句中。我不确定我做得对。

我有两个表，orders和customers，可以在同一个操作中从一个表单插入数据。 orders表的主键= orderID也需要添加到customers表中。

数据库关系图

我可以毫无问题地将数据上传到orders表，但对customers表的第二个查询功能什么都不做。我很确定这是由于我设置的外键约束。我做了一些研究并意识到我需要获取外键ID，可能使用$mysqli->insert_id或PDO::lastInsertId，但我对如何将其与当前函数一起使用感到迷茫。

的index.php

$product = $_POST['product'];
$fName = $_POST['fName'];
$lName = $_POST['lName'];
$address = $_POST['address'];
$address2 = $_POST['address2'];
$city = $_POST['city'];
$state = $_POST['state'];
$zip = $_POST['zip'];
$country = $_POST['country'];
$phoneNumber = $_POST['phoneNumber'];
$email = $_POST['email'];
/* Functions */
order_Data ($db, $product, $fName, $lName, $email);
// Need to have orderID  from ^ table used in order_custData sql statement
order_custData($db, $orderID, $fName, $lName, $address, $address2, $city, $state, $zip, $country, $phoneNumber, $email);

的functions.php

<?php 

/**  Order Data Function
 */
function order_Data($db, $product, $fName, $lName, $email) {
    try {
        $sql = "INSERT INTO orders SET product = :product, fName = :fName, lName = :lName, email = :email";
        $ps = $db->prepare($sql);
        $ps->bindValue(':product', $product);
        $ps->bindValue(':fName', $fName);
        $ps->bindValue(':lName', $lName);
        $ps->bindValue(':email', $email);
        $ps->execute();
        return $orderID = $db->lastInsertId();
    } catch (PDOException $e) {
        die("Sorry, There was a problem order table.");
    }
}

/**  Customer Purchase Information Function
 * @param $orderID -- I need to insert the orderID from orders table?
 */
function order_custData($db, $orderID, $fName, $lName, $address, $address2, $city, $state, $zip, $country, $phoneNumber, $email) {
    try {
        $sql = "INSERT INTO customers SET  orderID = :orderID, fName = :fName, lName = :lName, address = :address, address2 = :address2,city = :city, state = :state, zip = :zip, country = :country, phoneNumber = :phoneNumber, email = :email";
        $ps = $db->prepare($sql);
        $ps->bindValue(':orderID', $orderID); // Foreign key from orders table
        $ps->bindValue(':fName', $fName);
        $ps->bindValue(':lName', $lName);
        $ps->bindValue(':address', $address);
        $ps->bindValue(':address2', $address2);
        $ps->bindValue(':city', $city);
        $ps->bindValue(':state', $state);
        $ps->bindValue(':zip', $zip);
        $ps->bindValue(':country', $country);
        $ps->bindValue(':phoneNumber', $phoneNumber);
        $ps->bindValue(':email', $email);
        return $ps->execute();
    } catch (PDOException $e) {
        die("Sorry, There was a problem with the customer table!");
    }
}
?>

现在$orderID和:orderID在order_custData函数中就可以作为直观表示来解决问题。我最初并没有尝试用它来执行sql语句。但是，我尝试过的任何东西似乎都会抛出错误underfined variable或致命的第一个函数的prepare函数。

感谢您的时间。

Answer 1

效用函数order_Data()已经返回ID：

…
return $orderID = $db->lastInsertId();

（尽管重写为return $db->lastInsertId();。）

只需通过赋值变量来携带返回值：

$orderID = order_Data ($db, $product, $fName, $lName, $email);
order_custData($db, $orderID, $fN …);

Answer 2

试试这个。只需通过赋值变量
来携带返回值

<?php
require_once ("models/dbConn.php");
require_once ("models/functions.php");
$action = $_REQUEST['action'];
if ($action == NULL || empty($action)):
    $action = '';
endif;
include_once ("views/header.php");
switch ($action) :
    case '':
        include ("views/main.php");
        break;
    case 'checkoutCart':
        // Once form button is clicked action = completePurchase
        include ("views/checkout.php");
        break;
    case 'completePurchase':
        $product = $_POST['product'];
        $fName = $_POST['fName'];
        $lName = $_POST['lName'];
        $address = $_POST['address'];
        $address2 = $_POST['address2'];
        $city = $_POST['city'];
        $state = $_POST['state'];
        $zip = $_POST['zip'];
        $country = $_POST['country'];
        $phoneNumber = $_POST['phoneNumber'];
        $email = $_POST['email'];
        /* Functions */

$ orderID = order_Data（$ db，$ product，$ fName，$ lName，$ email）;

        // Need to have orderID  from ^ table used in order_custData sql statement
        order_custData($db, $orderID, $fName, $lName, $address, $address2, $city, $state, $zip, $country, $phoneNumber, $email);
        include ("views/complete.php");
        break;
endswitch;
include_once ("views/footer.php");
?>

Answer 3

您的order_Data()函数正在返回订单ID，但您没有将index.php中的返回值分配给$objectID。

即。改变这个......

order_Data ($db, $product, $fName, $lName, $email);

......对此...

$orderID = order_Data ($db, $product, $fName, $lName, $email);

我建议在开发环境中检查PHP的错误报告级别以包含通知，因为PHP将触发使用未定义变量的通知。

PHP - 获取最后一个语句在第二个函数中使用的PK ID插入语句

3 个答案: