What are best practices for structuring PHP pages to avoid browser navigation errors?

Browser navigation errors can be avoided by using proper structuring of PHP pages. One common practice is to redirect users after processing a form submission to prevent them from resubmitting the form if they refresh the page. This can be achieved by using the header() function in PHP to redirect the user to a different page after processing the form. 

// Check if form is submitted
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    // Process form data
    
    // Redirect user to a different page to avoid resubmission
    header("Location: success.php");
    exit;
}

Keywords

PHP browser navigation errors header function redirect error handling

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