What are some recommended resources for understanding and utilizing mysql_query in PHP effectively?

To effectively use mysql_query in PHP, it is recommended to understand the basics of SQL queries and how to properly construct and execute them in PHP. It is important to sanitize user input to prevent SQL injection attacks and to handle errors appropriately when executing queries.

// Example of executing a SELECT query using mysql_query
$conn = mysqli_connect("localhost", "username", "password", "database");

$query = "SELECT * FROM users";
$result = mysqli_query($conn, $query);

if ($result) {
    while ($row = mysqli_fetch_assoc($result)) {
        // Process each row of the result
    }
} else {
    echo "Error executing query: " . mysqli_error($conn);
}

mysqli_close($conn);