What resources or tutorials are recommended for PHP beginners to improve their understanding of SQL queries and database interactions?

For PHP beginners looking to improve their understanding of SQL queries and database interactions, resources such as W3Schools, PHP.net, and tutorials on YouTube can be helpful. These resources provide step-by-step guides, examples, and explanations on how to write SQL queries, connect to databases, and perform CRUD operations in PHP.

<?php
// Example code snippet connecting to a MySQL database and executing a simple SQL query
$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);
}

// Sample SQL query
$sql = "SELECT * FROM table_name";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
    // Output data of each row
    while($row = $result->fetch_assoc()) {
        echo "id: " . $row["id"]. " - Name: " . $row["name"]. "<br>";
    }
} else {
    echo "0 results";
}

$conn->close();
?>