Runtime Error

What This Error Means

This error occurs when the SQL connection to the database server is lost, often due to a network issue or a timeout. The database connection is not stable, resulting in an error when trying to execute a query.

Why It Happens

This error happens because the SQL connection to the database server was lost. This can be caused by a variety of factors, such as a network issue, a timeout, or a server restart. When the connection is lost, the database driver will throw an error, making it impossible for the application to execute queries.

How to Fix It

1. 1To fix this error, you can try the following steps:
2. 21. Check the database server status to ensure it is running and accessible.
3. 32. Verify the network connection to the database server.
4. 43. Check the database connection timeout settings in your application. You may need to increase the timeout value to allow for a longer connection attempt.
5. 54. If the issue persists, consider implementing a retry mechanism to reconnect to the database server.

Example Code Solution

$result = mysqli_query($conn, "SELECT * FROM customers");

$retry_count = 0;
while ($retry_count < 3) {
    if ($result = mysqli_query($conn, "SELECT * FROM customers")) {
        break;
    } else {
        echo "Database connection lost. Retrying...";
        $retry_count++;
        sleep(5);
    }
}