How can PHP developers troubleshoot problems related to form submission and navigation between form steps in WordPress websites?

Issue: PHP developers can troubleshoot problems related to form submission and navigation between form steps in WordPress websites by checking for errors in form data validation, ensuring proper form submission handling, and implementing proper navigation between form steps using sessions or hidden input fields. Code snippet:

// Check if form is submitted
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    // Validate form data
    if (isset($_POST['step1_submit'])) {
        // Handle form submission for step 1
        // Validate and process form data for step 1
        // Redirect to step 2
        header("Location: step2.php");
        exit;
    } else if (isset($_POST['step2_submit'])) {
        // Handle form submission for step 2
        // Validate and process form data for step 2
        // Redirect to step 3 or back to step 2 if errors
        header("Location: step3.php");
        exit;
    } else if (isset($_POST['step3_submit'])) {
        // Handle form submission for step 3
        // Validate and process form data for step 3
        // Redirect to thank you page or back to step 3 if errors
        header("Location: thank_you.php");
        exit;
    }
}

// Display form steps
if (!empty($_SESSION['current_step'])) {
    // Display form for current step
    include $_SESSION['current_step'] . ".php";
} else {
    // Display form for step 1
    include "step1.php";
}