How can a beginner in PHP ensure that data is successfully saved in a database when using PHP functions like mysql_query?

To ensure that data is successfully saved in a database when using PHP functions like mysql_query, beginners should check the return value of the mysql_query function to verify if the query was executed successfully. If the return value is false, it indicates an error in the query execution. Beginners can also use error handling techniques like die(mysql_error()) to display any error messages during the query execution.

// Connect to the database
$conn = mysqli_connect("localhost", "username", "password", "database");

// Insert data into the database
$query = "INSERT INTO table_name (column1, column2) VALUES ('value1', 'value2')";
$result = mysqli_query($conn, $query);

// Check if the query was executed successfully
if($result){
    echo "Data successfully saved in the database";
} else {
    die(mysqli_error($conn));
}