What are the potential issues with using $_REQUEST instead of $_POST in PHP for form submissions?

Using $_REQUEST instead of $_POST for form submissions can lead to security vulnerabilities as it combines data from both $_GET and $_POST, making it easier for malicious users to manipulate the data. To ensure the form data is only coming from the POST method, it is recommended to use $_POST instead.

if ($_SERVER["REQUEST_METHOD"] == "POST") {
    // Process form data using $_POST
}