mysqli错误-bind_param：变量数不匹配

Question

我收到以下错误，但是我已经一遍又一遍地数了数，一切似乎都很好。 任何人有任何想法吗？

错误：

警告 ：mysqli_stmt :: bind_param（）[mysqli-stmt.bind-param]：变量数与第204行/home/ambnews/public_html/invoice/response.php中已准备好的语句中的参数数不匹配

码：

// invoice customer information
    // billing
    $customer_name = $mysqli->real_escape_string($_POST['customer_name']); // customer name
    $customer_email = $mysqli->real_escape_string($_POST['customer_email']); // customer email
    $customer_address_1 = $mysqli->real_escape_string($_POST['customer_address_1']); // customer address
    $customer_address_2 = $mysqli->real_escape_string($_POST['customer_address_2']); // customer address
    $customer_town = $mysqli->real_escape_string($_POST['customer_town']); // customer town
    $customer_county = $mysqli->real_escape_string($_POST['customer_county']); // customer county
    $customer_postcode = $mysqli->real_escape_string($_POST['customer_postcode']); // customer postcode
    $customer_phone = $mysqli->real_escape_string($_POST['customer_phone']); // customer phone number

    //shipping
    $customer_name_ship = $mysqli->real_escape_string($_POST['customer_name_ship']); // customer name (shipping)
    $customer_address_1_ship = $mysqli->real_escape_string($_POST['customer_address_1_ship']); // customer address (shipping)
    $customer_address_2_ship = $mysqli->real_escape_string($_POST['customer_address_2_ship']); // customer address (shipping)
    $customer_town_ship = $mysqli->real_escape_string($_POST['customer_town_ship']); // customer town (shipping)
    $customer_county_ship = $mysqli->real_escape_string($_POST['customer_county_ship']); // customer county (shipping)
    $customer_postcode_ship = $mysqli->real_escape_string($_POST['customer_postcode_ship']); // customer postcode (shipping)

    $query = "INSERT INTO store_customers (
                    name,
                    email,
                    address_1,
                    address_2,
                    town,
                    county,
                    postcode,
                    phone,
                    name_ship,
                    address_1_ship,
                    address_2_ship,
                    town_ship,
                    county_ship,
                    postcode_ship
                ) VALUES (
                    '".$customer_name."',
                    '".$customer_email."',
                    '".$customer_address_1."',
                    '".$customer_address_2."',
                    '".$customer_town."',
                    '".$customer_county."',
                    '".$customer_postcode."',
                    '".$customer_phone."',
                    '".$customer_name_ship."',
                    '".$customer_address_1_ship."',
                    '".$customer_address_2_ship."',
                    '".$customer_town_ship."',
                    '".$customer_county_ship."',
                    '".$customer_postcode_ship."'
                );
            ";

    /* Prepare statement */
    $stmt = $mysqli->prepare($query);
    if($stmt === false) {
      trigger_error('Wrong SQL: ' . $query . ' Error: ' . $mysqli->error, E_USER_ERROR);
    }

    print_r($stmt->bind_param(
        'sssssssissssss',
        $customer_name,$customer_email,$customer_address_1,$customer_address_2,$customer_town,$customer_county,$customer_postcode,
        $customer_phone,$customer_name_ship,$customer_address_1_ship,$customer_address_2_ship,$customer_town_ship,$customer_county_ship,$customer_postcode_ship));

    /* Bind parameters. TYpes: s = string, i = integer, d = double,  b = blob */
    $stmt->bind_param(
        'sssssssissssss',
        $customer_name,$customer_email,$customer_address_1,$customer_address_2,$customer_town,$customer_county,$customer_postcode,
        $customer_phone,$customer_name_ship,$customer_address_1_ship,$customer_address_2_ship,$customer_town_ship,$customer_county_ship,$customer_postcode_ship);

    /* Execute statement */
    $stmt->execute();

    if($stmt->execute()){
        //if saving success
        echo json_encode(array(
            'status' => 'Success',
            'message' => 'Customer has been created successfully!'
        ));
    } else {
        // if unable to create invoice
        echo json_encode(array(
            'status' => 'Error',
            'message' => 'There has been an error, please try again.'
            // debug
            //'message' => 'There has been an error, please try again.<pre>'.$mysqli->error.'</pre><pre>'.$query.'</pre>'
        ));
    }

    //close database connection
    $mysqli->close();

Answer 1

您需要看一下手册 ：

1. 使用准备好的语句时，您不应逃避您的值，因为您将在数据中添加文字反斜杠。
2. 您不应在查询中注入变量，而应使用占位符（mysqli中的问号）。 这些与您的价值观息息相关。

因此，您的查询将是：

$query = "INSERT INTO store_customers (
                name,
                email,
                // etc.
            ) VALUES (
                ?,
                ?,
                // etc.
            );
        ";

然后绑定您的价值观：

$stmt->bind_value(
    'sssssssissssss',
    $_POST['customer_name'],
    $_POST['customer_email'],
    // etc.
);

请注意，我使用的是bind_value()而不是bind_param()因为这似乎只使用一次，所以不需要绑定参数，您可以直接绑定值。 不过，这应该没有什么不同。