How can empty array elements from an HTML form be filtered out before inserting data into a database with PHP?

When inserting data from an HTML form into a database with PHP, it is important to filter out empty array elements to prevent inserting unwanted or incorrect data into the database. This can be done by using the array_filter() function in PHP to remove any empty elements from the form data before inserting it into the database.

// Filter out empty array elements before inserting data into the database
$form_data = $_POST['form_data']; // Assuming form data is submitted via POST method

// Remove empty elements from the form data
$filtered_data = array_filter($form_data);

// Insert filtered data into the database
// Use $filtered_data array to insert data into the database