Contact-Form-PHP

A modern, lightweight, and secure contact form built with PHP and Bootstrap 5 — powered by AJAX, PHPMailer, and Google reCAPTCHA v3, with zero jQuery dependency

🚀 Live Demo

🔗 Try the demo

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✨ Features

• PHP 8.4+ support
• Bootstrap 5 UI – Responsive and clean
• AJAX-based form submission – No page reloads
• Google reCAPTCHA v3 – Prevent spam without hassle
• PHPMailer with SMTP Auth – Secure email delivery
• Client-side + Server-side Validation – Double-layered validation
• Bot Protection – Includes honeypot field to trap bots

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📦 Quick Installation

1. Clone or download the repository :

git clone https://github.com/raspgot/Contact-Form-PHP.git

2. Run it locally with a local server like XAMPP

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⚙️ Configuration

Before deploying, update your SMTP and reCAPTCHA credentials

1. SMTP & reCAPTCHA Configuration

• Get your reCAPTCHA keys from Google reCAPTCHA Admin
• Then, update the following constants in AjaxForm.php :

const SMTP_HOST     = 'your.smtp.com';
const SMTP_USERNAME = 'your@email.com';
const SMTP_PASSWORD = 'yourpassword';
const SECRET_KEY    = 'your_recaptcha_secret_key';

ℹ️ Ensure php_curl is enabled in your php.ini :

extension=curl

2. Frontend reCAPTCHA Setup

Replace the site key in AjaxForm.js :

const RECAPTCHA_SITE_KEY = 'YOUR_RECAPTCHA_SITE_KEY';

• Add the reCAPTCHA script to index.html (just before </body>) :

<script src="https://www.google.com/recaptcha/api.js?render=YOUR_RECAPTCHA_SITE_KEY"></script>

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🛠️ Customization

Editing Validation Messages

You can customize the success and error messages in the HTML :

<div class="valid-feedback">Looks good !</div>
<div class="invalid-feedback">Please provide a valid name.</div>

Adding More Fields

To add custom fields (e.g. subject, phone number) :

1. Add them to index.html :

<input type="text" name="subject" class="form-control" required />

2. Handle them in AjaxForm.php :

$subject = sanitize($_POST['subject']) ?? '';

3. Include them in the email body and validation

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🤝 Contributing

Got a bug, idea, or suggestion? Contributions are very welcome !

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Author

Developed with ❤️ by Raspgot

If you found this project helpful, ⭐️ star the repo !

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Dependencies

• PHPMailer
• Bootstrap