How can PHP developers effectively troubleshoot issues with form handling and data processing?

Issue: PHP developers can effectively troubleshoot issues with form handling and data processing by using built-in PHP functions like isset() to check if form fields are set and not empty, using htmlspecialchars() to prevent XSS attacks, and using error_reporting() to display errors for debugging. Code snippet: 

<?php
if(isset($_POST['submit'])) {
    $name = htmlspecialchars($_POST['name']);
    $email = htmlspecialchars($_POST['email']);
    
    if(!empty($name) && !empty($email)) {
        // Process the form data
        echo "Form submitted successfully!";
    } else {
        echo "Please fill out all the fields.";
    }
}
?>

Related Questions