🛡️ CAPTCHA Code (Alphabet Only) – JavaScript

A simple, lightweight PHP CAPTCHA generator that creates random alphabetic codes for securing your HTML forms. This script helps protect against spam bots by displaying image-based verification using randomly generated alphabets.

🖼️ Screenshot

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🔐 How It Works

• captcha.php dynamically generates a random 5-letter string.
• It creates an image using the GD library and outputs it as a PNG.
• The string is stored in a session variable to validate against user input.

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🧠 SEO Keywords

PHP CAPTCHA, alphabet CAPTCHA, PHP CAPTCHA form validation, PHP image verification, CAPTCHA anti-spam PHP, captcha.php, PHP form protection, letter-based CAPTCHA, simple CAPTCHA for website

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🔍 Features

• ✅ Generates CAPTCHA with random alphabets
• 🖼️ Outputs image-based verification code
• 🔐 Helps prevent automated form submissions (bots)
• 💡 Easy to integrate into any PHP form
• 📦 No external dependencies

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🚀 Live Demo

Link :- View the demo by cloning and running the code locally.

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📁 Project Structure

Captcha-Code-Alphabet/ │ ├── captcha.php # Generates the CAPTCHA image ├── index.php # Sample form with CAPTCHA └── style.css # Optional styling (if present)

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🧰 Requirements

• JavaScript ES6 or higher
• GD Library enabled (for image generation)

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🙌 Credits

Developed by @Anni-16

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📄 License

This project is licensed under the MIT License - see the LICENSE file for details.

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⚙️ Installation & Usage

1. Clone the Repository

   git clone https://github.com/Anni-16/Captcha-Code-Alphabet.git
   cd Captcha-Code-Alphabet