How can PHP developers ensure a seamless user experience when submitting a form and redirecting to a different page?

When submitting a form and redirecting to a different page in PHP, developers can ensure a seamless user experience by using header() function to redirect after form processing is complete. This way, users won't see any intermediate pages or form resubmission warnings. Additionally, developers should use session variables to persist form data across redirects for a smoother user experience. 

// Process form data
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    // Process form data here
    
    // Store form data in session
    $_SESSION['form_data'] = $_POST;
    
    // Redirect to a different page
    header("Location: success.php");
    exit();
}

// In the success.php page
session_start();

// Retrieve form data from session
$form_data = $_SESSION['form_data'];

// Clear form data from session
unset($_SESSION['form_data']);

// Display success message or further processing

Keywords

form submission redirect header function session variables validation

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