我使用了this answer中的代码，并根据需要进行了修改，但是查询运行了，但记录无法插入数据库中。
这是我的test.php文件，我使用输入表单（标题，规范，类别，子类别，价格，描述）等来形成表单。
此表单基于将多个图像插入一个产品中。 我从数据库中获取了类别和子类别的名称，
<?php
include("header.php");
$con=mysqli_connect("localhost","root","","bakery");
if(!$con)
{
echo mysqli_error($con);
}
?>
<div class="content-page">
<!-- Start content -->
<div class="content">
<div class="container-fluid">
<div class="row">
<div class="col-12">
<div class="page-title-box">
<h4 class="page-title float-left">Product Page</h4>
<div class="clearfix"></div>
</div>
</div>
</div>
<!-- end row -->
<div class="row">
<div class="col-12">
<div class="card">
<div class="card-header">
<h4 class="m-t-0 header-title mb-0">Add New Product</h4>
</div>
<div class="card-body">
<div>
<form class="form-horizontal" action="testWork.php" method="post" enctype="multipart/form-data">
<div class="form-group row">
<label class="col-2 col-form-label">Product Name</label>
<div class="col-10">
<input type="text" class="form-control" id="title" name="title" placeholder="Enter Name" required="required" value="<?php echo isset($productName) ? $productName : ''; ?>" />
</div>
</div>
<div class="form-group row">
<label class="col-2 col-form-label">Specification</label>
<div class="col-10">
<input type="text" class="form-control" id="specification" name="specification" placeholder="Enter Specification" required="required" value="<?php echo isset($productSpecification) ? $productSpecification : ''; ?>" />
</div>
</div>
<div class="form-group row">
<label class="col-2 col-form-label">Product Price</label>
<div class="col-10">
<input type="text" class="form-control" id="price" value="Rs." name="price" placeholder="Enter Price" required="required" value="<?php echo isset($productQuantity) ? $productQuantity : ''; ?>"/>
</div>
</div>
<div class="form-group row">
<label class="col-2 col-form-label">Input Select</label>
<div class="col-10">
<select name="category" id="category" class="form-control" value="<?php echo isset($productCategory) ? $productCategory : ''; ?>">
<?php
$com=mysqli_query($con,"select * from category");
if(mysqli_num_rows($com)>0)
{
while($row = mysqli_fetch_array($com))
{
echo ("<option value='$row[id]'>$row[category]</option>");
}
}
?>
</select>
</div>
</div>
<div class="form-group row">
<label class="col-2 col-form-label">Select Product Sub Category</label>
<div class="col-10">
<select name="subcategory" id="subcategory" class="form-control" value="<?php echo isset($productSubcategory ) ? $productSubcategory : ''; ?>">
<?php
$com=mysqli_query($con,"select * from subcategory");
echo ("<option value=''>Select Sub-Category if you have it</option>");
if(mysqli_num_rows($com)>0)
{
while($row = mysqli_fetch_array($com))
{
echo ("<option value='$row[id]'>$row[subcategory]</option>");
}
}
?>
</select>
</div>
</div>
<div class="form-group row">
<label class="col-2 col-form-label">Product Description</label>
<div class="col-10">
<textarea class="form-control" rows="5" id="description" name="description" placeholder="Enter Description" required="required" />
<?php echo isset($productDescription) ? $productDescription : ''; ?>
</textarea>
</div>
</div>
<div class="form-group row">
<label class="col-2 col-form-label">Product Photos</label>
<div class="col-10">
<input type="file" class="form-control" id="file" name="file[]" multiple>
</div>
</div>
<div class="form-group mb-0 justify-content-end row">
<div class="col-10">
<button type="submit" type="submit" name="submit" id="submit" class="btn btn-info waves-effect waves-light">Submit</button>
</div>
</div>
</form>
</div>
</div>
</div>
<!-- end card -->
</div>
<!-- end col -->
</div>
<!-- end row -->
<!-- end row -->
</div>
<!-- container -->
</div>
<!-- content -->
<!-- jQuery -->
这是我在后端代码中编写的testWork.php文件。
<?php
// Upload configs.
define('UPLOAD_DIR', 'uploads');
define('UPLOAD_MAX_FILE_SIZE', 5485760); // 10MB.
//@changed_2018-02-17_14.28
define('UPLOAD_ALLOWED_MIME_TYPES', 'image/jpeg,image/png,image/gif');
// Db configs.
define('HOST', 'localhost');
define('PORT', 3306);
define('DATABASE', 'example');
define('USERNAME', 'root');
define('PASSWORD', '');
define('CHARSET', 'utf8');
/*
* Enable internal report functions. This enables the exception handling,
* e.g. mysqli will not throw PHP warnings anymore, but mysqli exceptions
* (mysqli_sql_exception).
*
* MYSQLI_REPORT_ERROR: Report errors from mysqli function calls.
* MYSQLI_REPORT_STRICT: Throw a mysqli_sql_exception for errors instead of warnings.
*
* @link http://php.net/manual/en/class.mysqli-driver.php
* @link http://php.net/manual/en/mysqli-driver.report-mode.php
* @link http://php.net/manual/en/mysqli.constants.php
*/
$mysqliDriver = new mysqli_driver();
$mysqliDriver->report_mode = (MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
/*
* Create a new db connection.
*
* @see http://php.net/manual/en/mysqli.construct.php
*/
$connection = new mysqli(HOST, USERNAME, PASSWORD, DATABASE, PORT);
$productSaved = FALSE;
if (isset($_POST['submit'])) {
/*
* Read posted values.
*/
$productName = isset($_POST['title']) ? $_POST['title'] : '';
$productSpecification = isset($_POST['specification']) ? $_POST['specification'] : '';
$productCategory = isset($_POST['category']) ? $_POST['category'] : '';
$productSubcategory = isset($_POST['subcategory']) ? $_POST['subcategory'] : '';
$productQuantity = isset($_POST['price']) ? $_POST['price'] :'';
$productDescription = isset($_POST['description']) ? $_POST['description'] : '';
/*
* Validate posted values.
*/
if (empty($productName)) {
$errors[] = 'Please provide a product title.';
}
if ($productQuantity == 0) {
$errors[] = 'Please provide the price.';
}
if (empty($productDescription)) {
$errors[] = 'Please provide a description.';
}
/*
* Create "uploads" directory if it doesn't exist.
*/
if (!is_dir(UPLOAD_DIR)) {
mkdir(UPLOAD_DIR, 0777, true);
}
/*
* List of file names to be filled in by the upload script
* below and to be saved in the db table "products_images" afterwards.
*/
$filenamesToSave = [];
$allowedMimeTypes = explode(',', UPLOAD_ALLOWED_MIME_TYPES);
/*
* Upload files.
*/
if (!empty($_FILES)) {
if (isset($_FILES['file']['error'])) {
foreach ($_FILES['file']['error'] as $uploadedFileKey => $uploadedFileError) {
if ($uploadedFileError === UPLOAD_ERR_NO_FILE) {
$errors[] = 'You did not provide any files.';
} elseif ($uploadedFileError === UPLOAD_ERR_OK) {
$uploadedFileName = basename($_FILES['file']['name'][$uploadedFileKey]);
if ($_FILES['file']['size'][$uploadedFileKey] <= UPLOAD_MAX_FILE_SIZE) {
$uploadedFileType = $_FILES['file']['type'][$uploadedFileKey];
$uploadedFileTempName = $_FILES['file']['tmp_name'][$uploadedFileKey];
$uploadedFilePath = rtrim(UPLOAD_DIR, '/') . '/' . $uploadedFileName;
if (in_array($uploadedFileType, $allowedMimeTypes)) {
if (!move_uploaded_file($uploadedFileTempName, $uploadedFilePath)) {
$errors[] = 'The file "' . $uploadedFileName . '" could not be uploaded.';
} else {
$filenamesToSave[] = $uploadedFilePath;
}
} else {
$errors[] = 'The extension of the file "' . $uploadedFileName . '" is not valid. Allowed extensions: JPG, JPEG, PNG, or GIF.';
}
} else {
$errors[] = 'The size of the file "' . $uploadedFileName . '" must be of max. ' . (UPLOAD_MAX_FILE_SIZE / 1024) . ' KB';
}
}
}
}
}
/*
* Save product and images.
*/
if (!isset($errors)) {
/*
* The SQL statement to be prepared. Notice the so-called markers,
* e.g. the "?" signs. They will be replaced later with the
* corresponding values when using mysqli_stmt::bind_param.
*
* @link http://php.net/manual/en/mysqli.prepare.php
*/
$sql = 'INSERT INTO products (
title,
price,
specification,
category,
subcategory,
description
) VALUES (
?, ?, ? , ?, ?, ?
)';
/*
* Prepare the SQL statement for execution - ONLY ONCE.
*
* @link http://php.net/manual/en/mysqli.prepare.php
*/
$statement = $connection->prepare($sql);
if($statement)
{
header('Location: testget.php?id=$lastInsertId');
}
else
{
echo mysqli_error($connection);
}
/*
* Bind variables for the parameter markers (?) in the
* SQL statement that was passed to prepare(). The first
* argument of bind_param() is a string that contains one
* or more characters which specify the types for the
* corresponding bind variables.
*
* @link http://php.net/manual/en/mysqli-stmt.bind-param.php
*/
$statement->bind_param('sis', $productName, $productQuantity, $productDescription,
$productSpecification, $productCategory, $productSubcategory);
/*
* Execute the prepared SQL statement.
* When executed any parameter markers which exist will
* automatically be replaced with the appropriate data.
*
* @link http://php.net/manual/en/mysqli-stmt.execute.php
*/
$statement->execute();
// Read the id of the inserted product.
$lastInsertId = $connection->insert_id;
/*
* Close the prepared statement. It also deallocates the statement handle.
* If the statement has pending or unread results, it cancels them
* so that the next query can be executed.
*
* @link http://php.net/manual/en/mysqli-stmt.close.php
*/
$statement->close();
/*
* Save a record for each uploaded file.
*/
foreach ($filenamesToSave as $filename) {
$sql = 'INSERT INTO products_images (
product_id,
filename
) VALUES (
?, ?
)';
$statement = $connection->prepare($sql);
$statement->bind_param('is', $lastInsertId, $filename);
$statement->execute();
$statement->close();
}
/*
* Close the previously opened database connection.
*
* @link http://php.net/manual/en/mysqli.close.php
*/
$connection->close();
$productSaved = TRUE;
/*
* Reset the posted values, so that the default ones are now showed in the form.
* See the "value" attribute of each html input.
*/
$productSpecification = $productCategory =$productSubcategory=$productName = $productQuantity = $productDescription = NULL;
}
}
?>
我的英语不好。请帮助贫困的英语学习者。
这是我的错误消息
Warning: mysqli_stmt::bind_param(): Number of elements in type definition string doesn't match number of bind variables in C:\xampp\htdocs\bakery1\admin_4\testWork.php on line 152
Fatal error: Uncaught mysqli_sql_exception: No data supplied for parameters in prepared statement in C:\xampp\htdocs\bakery1\admin_4\testWork.php:162 Stack trace: #0 C:\xampp\htdocs\bakery1\admin_4\testWork.php(162): mysqli_stmt->execute() #1 {main} thrown in C:\xampp\htdocs\bakery1\admin_4\testWork.php on line 162
答案 0 :(得分：0)
执行此操作时：
$statement->bind_param('sis', $productName, $productQuantity, $productDescription, $productSpecification, $productCategory, $productSubcategory);
'sis'的意思是：您具有三个分别为String，Integer和String类型的参数。
那么，如果有3个参数，它会“ sis”吗？
您要做的是使用“ sisssss”代替“ sis”。我假设productSpecification，productCategory，productSubCategory是字符串