How can I Update My MySQL Code to Utilize MySQLi?

Convert MySQL Code to MySQLi: A Comprehensive Guide

Updating from MySQL to MySQLi is a recommended step to enhance the security and efficiency of your PHP applications. Since MySQL has been deprecated, MySQLi offers modern features and improved performance.

For developers who are unfamiliar with MySQLi, transitioning can be challenging. Here's how you can transform your MySQL code to MySQLi:

Converting the Provided MySQL Code to MySQLi

To convert the example code provided, you can follow these steps:

1. Initialize a MySQLi connection using mysqli_connect function.
2. Prepare the query using mysqli_prepare function and bind variables if necessary.
3. Execute the query using mysqli_stmt_execute.
4. Fetch the results using mysqli_stmt_get_result.

The updated code using MySQLi would look like this:

<code class="php">$mysqli = mysqli_connect(...);
$stmt = mysqli_prepare($mysqli, "SELECT * FROM friends WHERE user1_id = ? AND status = 2 OR user2_id = ? AND status = 2");
mysqli_stmt_bind_param($stmt, 'ii', $_SESSION['id'], $_SESSION['id']);
mysqli_stmt_execute($stmt);
$result = mysqli_stmt_get_result($stmt);

if ($result && mysqli_num_rows($result) > 0) {
    // Process results
}</code>

Additional Resources

• [MySQLConverterTool](https://github.com/philip/MySQLConverterTool): A tool that can assist in converting MySQL code to MySQLi.
• [MySQL Shim Library](https://github.com/dshafik/php7-mysql-shim): A library that provides a compatibility layer, allowing you to use MySQL syntax with MySQLi.

The above is the detailed content of How can I Update My MySQL Code to Utilize MySQLi?. For more information, please follow other related articles on the PHP Chinese website!