What debugging steps can be taken to understand the structure of the "fields" array and determine how to extract the necessary user input data for database insertion?

To understand the structure of the "fields" array and extract the necessary user input data for database insertion, you can use the var_dump() function to inspect the contents of the array. This will help you identify the keys and values within the array and determine how to access the user input data. Once you have a clear understanding of the array structure, you can use the appropriate keys to extract the user input data for database insertion.

// Debugging to understand the structure of the "fields" array
var_dump($fields);

// Extracting necessary user input data for database insertion
$user_input_data = array(
    'field1' => $fields['field1'],
    'field2' => $fields['field2'],
    // Add more fields as needed
);

// Inserting user input data into the database
// $db_connection is assumed to be the database connection object
$query = "INSERT INTO table_name (field1, field2) VALUES (:field1, :field2)";
$statement = $db_connection->prepare($query);
$statement->execute($user_input_data);