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Fuel Captcha Package

A driver based captcha package for FuelPHP

About

Installation

Download the package and extract it into fuel/packages/captcha/

You must then either add it to always_load in app/config/config.php or use Package::load('captcha').

Basic Configuration

The Captcha config file is located at

config/captcha.php

driver_list

An array of drivers

  'driver_list' => array(
		'simplecaptcha' => 'Driver_Simplecaptcha',
		'recaptcha' => 'Driver_Recaptcha',
	),

driver_default

The default driver to load

Drivers

By default there are two drivers for the Captcha Package

  • Simplecaptcha
  • reCAPTCHA

Basic Usage

Forging a Captcha Instance

To get a Captcha instance with the default driver:

Captcha::forge();

To get a Captcha instance with a specific driver:

Captcha::forge('driver_name');

Captcha::forge()->check();

Checks to see if the user entered the correct captcha key

Captcha::forge()->image();

Returns a Captcha Image response object This currently works with the Simplecaptcha Driver

Captcha::forge()->html();

Returns a html block for the given driver. In general the html block will contain the captcha image code and an input field.

Simplecaptcha

Simplecaptcha is our lightweight captcha class written for this package

Basic Configuration

The config file for Simplecaptcha can be found at config/simplecaptcha.php

Captcha_Route

You will want to add a path to a controller action which returns

public function action_simplecaptcha()
{
	return Captcha::forge('simplecaptcha')->image();
}

This will enable you to use ->html() as it requires the path to where the captcha image is displayed

Salt

You will want to replace the salt with a new random hash. This string will be used to salt captcha keys before storing them in the session.

Styling the Simplecaptcha Image

In the config file there are many different ways to style the captcha generated image. Each config variable is well documented in the comments and it's really easy to tweak

Image

Captcha::forge('simplecaptcha')->image($config = array());

The image function will return a image response object created with the php GD library You can pass in extra configuration values whilst calling the image function.

$config = array('captcha_width' => 300);
Captcha::forge('simplecaptcha')->image($config);

This will create the image object, with a width of 300 pixels.

When the image is created, a hashed and salted key will be stored in the users session.

Html

Captcha::forge('simplecaptcha')->html($config = array());

This will return a html object with the captcha image and input text field. By default it will load a view views/simplecaptcha/default.php This file can be edited directly should you want to change the output Alternatively you can pass a view variable in the config array, which will make the function load a custom view

$config = array( 'view' => 'path/to/view' );
Captcha::forge('simplecaptcha')->html($config);

You can also pass the captcha_route variable in the $config array

$config = array( 'captcha_route' => 'url for image()' );
Captcha::forge('simplecaptcha')->html($config);

Should you want to change the default view that is loaded, alter the default_view variable in the config

'default_view' => 'simplecaptcha/default',

Check

Captcha::forge('simplecaptcha')->check($key = null);

This will check the key entered by the user, against the one stored in the session If $key is left null, the function will try to get the entered key from the POST input, using the post_key_name specified in config

'session_key_name' => 'simplecaptcha',
'post_key_name' => 'simplecaptcha',

If the keys match, it will return True, otherwise it will return false

reCAPTCHA

The recaptcha driver is based on the recaptcha package here: https://github.com/pwrhead/fuel-recaptcha

Basic Configuration

The config file for reCAPTCHA can be found at config/recaptcha.php

You will need to add your private and public api keys here

Html

Captcha::forge('recaptcha')->html($view = null, $error = null, $use_ssl = false);

This will return a html object with the reCAPTCHA html block. By default it will load the view views/recaptcha/default.php You can set $view to a different view whilst calling html()

Captcha::forge('recaptcha')->html('recaptcha/custom');

You can also add the $error variable, with any error messages the reCAPTCHA html block needs to display Finally you can set $use_ssl to true should you wish to enable ssl. Should you want to change the default view that is loaded, alter the default_view variable in the config

'default_view' => 'simplecaptcha/default',

Check

Captcha::forge('recaptcha')->check($remote_ip = null, $challenge = null, $response = null, $extra_params = array());

This will check if the key entered by the user is correct.

Captcha::forge('recaptcha')->check();

Will return True or False dependant on the keys being a match By default the function will find the $remote_ip, $challenge, $response and $extra_params, But you can enter them when you call check() if needed. If left null, the $challenge and $response will be taken from the Input POST using the names specified in the config file

'challenge_field' => 'recaptcha_challenge_field',
'response_field' => 'recaptcha_response_field',