How to handle asynchronous data insertion using PHP database connection

How to use PHP database connection to handle asynchronous data insertion

When developing websites and applications, it is often necessary to handle a large number of data insertion operations. In some cases, data insertion operations may need to occur in the background to avoid delays in user interface response. PHP provides a technology called asynchronous data insertion, which can handle data insertion operations in the background to improve user experience.

In this article, we will learn how to handle asynchronous data insertion using PHP database connection.

Step 1: Create a database connection

First, we need to create a database connection in the PHP file. You can use PHP's built-in function mysqli_connect() to create a connection to the database. Here is an example:

$conn = mysqli_connect("localhost", "username", "password", "database");

In the above code, we replaced localhost with your database server address and username with your database username, Replace password with your database password and database with the name of the database you want to connect to.

Step 2: Get POST request data

In asynchronous data insertion, POST request is usually used to send data to the background. We can obtain this data through the $_POST global variable.

Here is an example:

$name = $_POST['name'];
$email = $_POST['email'];

In the above code, we get the POST data named name and email and put Its value is assigned to the corresponding variable.

Step 3: Write a SQL insert statement

Next, we need to write a SQL insert statement to insert the POST data into the database.

Here is an example:

$sql = "INSERT INTO users (name, email) VALUES ('$name', '$email')";

In the above code, we use the INSERT INTO statement to combine name and email## The value of # is inserted into the table named users.

Step 4: Perform the insert operation

Use PHP’s built-in function

mysqli_query() to execute the SQL insert statement.

The following is an example:

$result = mysqli_query($conn, $sql);

In the above code, we use the previously created database connection

$conn and the SQL insert statement we wrote$ sqlPerform the insert operation.

Step 5: Return the insertion results

Finally, we need to return the results of the insertion operation for processing in the front-end page.

The following is an example:

if($result) {
    echo "数据成功插入到数据库中";
} else {
    echo "插入操作失败，请重试";
}

In the above code, we check the result of the insert operation and print the corresponding message based on the result.

After completing the above steps, we can save this code as a PHP file and deploy it to the server.

In the front-end page, you can use JavaScript's

XMLHttpRequest object to send a POST request and send the data to the background for processing. Here is an example:

var xhr = new XMLHttpRequest();
xhr.open("POST", "insert.php", true);
xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
xhr.onreadystatechange = function() {
    if (xhr.readyState === 4 && xhr.status === 200) {
        console.log(xhr.responseText);
    }
};
xhr.send("name=John&email=john@example.com");

In the above code, we create an XMLHttpRequest object and specify the URL to send the POST request. Then, we set the request headers and use the

send() method to send the data to the background.

When the background processing is completed, we can print out the response text in the console for further processing.

By studying this article, we learned how to use PHP database connection to handle asynchronous data insertion. By performing insert operations in the background, we can improve the user experience and avoid delays in UI response. This technique is very useful when dealing with large data insertion operations, especially in website and application development.

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