What are some best practices for debugging and troubleshooting PHP code when encountering issues with form fields and data display?

Issue: When encountering issues with form fields and data display in PHP, it is important to check the form input data, validate it, and ensure that the correct data is being displayed on the webpage. Code snippet: 

// Check if form is submitted
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    // Validate form input data
    $name = $_POST['name'];
    $email = $_POST['email'];
    
    // Display the form input data
    echo "Name: " . $name . "<br>";
    echo "Email: " . $email;
}

Keywords

Xdebug var_dump error_reporting $_POST data validation

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