Are there any potential pitfalls when trying to access msql functions in PHP while using a MySQL database?

When trying to access MySQL functions in PHP, it's important to note that the `mysql` extension has been deprecated in PHP 5.5.0 and removed in PHP 7.0.0. It is recommended to use the `mysqli` or PDO extension for interacting with MySQL databases in PHP to ensure compatibility and security.

// Connect to MySQL using mysqli extension
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "database";

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

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