What are common errors encountered when configuring a MySQL server with PHP?

Common errors encountered when configuring a MySQL server with PHP include incorrect database connection details, missing or incorrect MySQL extension in PHP configuration, and insufficient permissions for the PHP script to access the database. To solve these issues, ensure that the database connection details in your PHP script are accurate, enable the MySQL extension in your PHP configuration file, and grant the necessary permissions to the PHP script to access the database.

// Correct database connection details
$servername = "localhost";
$username = "root";
$password = "";
$database = "mydatabase";

// Enable MySQL extension in PHP configuration
// Uncomment or add the following line in php.ini:
// extension=mysqli

// Grant permissions for PHP script to access the database
// Ensure that the PHP script has the necessary permissions to access the MySQL server