How can Apache be configured to recognize and connect to a MySQL server for PHP applications?

To configure Apache to recognize and connect to a MySQL server for PHP applications, you need to ensure that the necessary PHP extensions for MySQL are installed and enabled. This can be done by installing the `php-mysql` extension on your server. Additionally, you need to update your PHP configuration file (`php.ini`) to include the MySQL server details such as the host, username, password, and database name.

<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "database_name";

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);

// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}
echo "Connected successfully";
?>