How can knowledge of MySQL complement learning PHP for beginners?

Knowledge of MySQL can complement learning PHP for beginners by allowing them to understand how to interact with a database using PHP. This knowledge enables beginners to create dynamic websites that can store and retrieve data from a database. By learning MySQL alongside PHP, beginners can develop a strong foundation in web development and enhance their skills in building robust and functional web applications.

<?php
// Connect to MySQL database
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "database";

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

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