What steps can be taken to debug and troubleshoot issues with saving form data in a database using PHP?

Issue: If form data is not being saved to a database using PHP, the first step is to check the database connection and make sure it is established correctly. Next, verify that the SQL query to insert the form data is correct and that all necessary fields are included. Finally, check for any errors in the PHP code that may be preventing the data from being saved. 

// Check the database connection
$connection = mysqli_connect("localhost", "username", "password", "database");
if (!$connection) {
    die("Connection failed: " . mysqli_connect_error());
}

// Insert form data into the database
$name = $_POST['name'];
$email = $_POST['email'];
$phone = $_POST['phone'];

$sql = "INSERT INTO users (name, email, phone) VALUES ('$name', '$email', '$phone')";

if (mysqli_query($connection, $sql)) {
    echo "Data saved successfully";
} else {
    echo "Error: " . $sql . "<br>" . mysqli_error($connection);
}

mysqli_close($connection);

Keywords

PHP form data database debugging troubleshooting

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