README

Simple PHP implementation of Steganography (Hiding a hidden message within an image)

Requirements

• PHP8.1+

Installation

composer require maikschneider/steganography

Usage

Put your message into an image

<?php

use MaikSchneider\Steganography\Processor;

$processor = new Processor();
$image = $processor->encode('/path/to/image.jpg', 'Message to hide'); // jpg|png|gif

// Save image to file
$image->write('/path/to/image.png'); // png only

// Or outout image to stdout
$image->render();

Extract message from an image

<?php

use MaikSchneider\Steganography\Processor;

$processor = new Processor();
$message = $processor->decode('/path/to/image.png');

echo $message; // "Message to hide"

License

The MIT License

Author

Kazuyuki Hayashi (@kzykhys)