What is the potential issue with PHP scripts repeatedly writing form data to a database upon page refresh?

The potential issue with PHP scripts repeatedly writing form data to a database upon page refresh is that it can lead to duplicate entries in the database. To solve this issue, you can implement a check to see if the form data has already been submitted before inserting it into the database. 

// Check if form data has been submitted
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    // Check if form data is not empty
    if (!empty($_POST['form_data'])) {
        // Insert form data into the database
        $formData = $_POST['form_data'];
        // Your database connection code and query to insert data here
    }
}

Keywords

PHP form data database page refresh data duplication

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