What are common pitfalls when using radio buttons in PHP forms for data transfer to a MySQL database?

One common pitfall when using radio buttons in PHP forms for data transfer to a MySQL database is not properly handling the selected value in the PHP script. To solve this issue, you need to ensure that you correctly retrieve the selected radio button value from the form data and then sanitize and validate it before inserting it into the database. 

// Retrieve the selected radio button value from the form data
$selected_option = $_POST['radio_button_name'];

// Sanitize and validate the selected value
$selected_option = filter_var($selected_option, FILTER_SANITIZE_STRING);

// Insert the selected value into the MySQL database
$query = "INSERT INTO table_name (column_name) VALUES ('$selected_option')";
mysqli_query($connection, $query);

Keywords

radio buttons PHP forms data transfer MySQL database validation

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