Captcha Plugin for CakePHP

Allows any type of image-based captchas for your forms.

A CakePHP plugin to

Easily integrate captchas in your CakePHP application.

This plugin requires CakePHP 4.0+. See version map for details.

Whats in this plugin

Simple match captchas that will already do the trick without annoying "I can't read those letters".
Extendable interface approach to easily hook in your own engine.

Whats the gotchas

Dead simple, no fancy JS or alike.
Cross-tab safe (not session based as in overwriting each other per request).
Completely stand-alone plugin, no third party stuff involved/needed.

Demo

See https://sandbox.dereuromark.de/sandbox/captchas

Setup

composer require dereuromark/cakephp-captcha

and

bin/cake plugin load Captcha -b -r

You also need to import the SQL schema. The quickest way is using Migrations plugin:

bin/cake migrations migrate -p Captcha

Basic Usage

Using the default MathEngine we can simply attach the behavior to the Table class.

Load the helper, e.g in your AppView:

$this->loadHelper('Captcha.Captcha');

Add a captcha control in your form:

echo $this->Captcha->render(['placeholder' => __('Please solve the riddle')]);

Add the behavior at runtime in your controller action:

$this->Ads->addBehavior('Captcha.Captcha');

Saving a new ad would now require a valid captcha solution.

// This would come from the form POST
$postData = [
    'title' => 'Looking for a friend',
];
$ad = $this->Ads->newEntity($postData);
$success = $this->Users->save($user);

For detailed documentation see Docs.