What are the best practices for determining if a form has been submitted in PHP?

To determine if a form has been submitted in PHP, you can check if the request method is POST and if the form fields you expect to be present are set. This helps ensure that the form submission is legitimate and not a false positive. 

if ($_SERVER['REQUEST_METHOD'] == 'POST' && isset($_POST['submit'])) {
    // Form has been submitted
    // Process form data here
}

Keywords

isset $_POST form submission validation PHP

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