How can PHP beginners effectively troubleshoot issues when using PHP to manipulate MySQL data?

When troubleshooting PHP issues related to manipulating MySQL data, beginners can start by checking for syntax errors in their PHP code and ensuring that the database connection is established correctly. They can also use error reporting functions like error_reporting() and ini_set() to display any errors or warnings that may occur during execution. Additionally, beginners can use functions like mysqli_error() to get detailed error messages from the MySQL database.

// Example code snippet for checking database connection and displaying errors
$conn = mysqli_connect($servername, $username, $password, $dbname);

if (!$conn) {
    die("Connection failed: " . mysqli_connect_error());
}

// Enable error reporting
error_reporting(E_ALL);
ini_set('display_errors', 1);

// Example code snippet for executing a query and displaying error message
$sql = "SELECT * FROM users";
$result = mysqli_query($conn, $sql);

if (!$result) {
    die("Error executing query: " . mysqli_error($conn));
}