# Documentation

# Ion Auth

Ion Auth is a simple and lightweight authentication library for the CodeIgniter framework

## License

Ion Auth is released under the Apache License v2.0. You can read the license here: http://www.apache.org/licenses/LICENSE-2.0

## Installation

1. Download the latest version: https://github.com/benedmunds/CodeIgniter-Ion-Auth/zipball/master
2. Copy the files from this package to the correspoding folder in your application folder. For example, copy Ion_auth/config/ion_auth.php to system/application/config/ion_auth.php.
3. You can also copy the entire directory structure into your third_party/ folder. For example, copy everything to /application/third_party/ion_auth/
4. Run the appropriate SQL file from the /sql directory.

The default login is:

- Email: admin@admin.com
- Password: password

## Upgrading

1. Download the latest version: https://github.com/benedmunds/CodeIgniter-Ion-Auth/zipball/2
2. Overwrite "libraries/ion_auth.php" and "models/ion_auth_model.php" with the new versions.

## Loading Ion Auth

You load Ion Auth just link any other library:

    $this->load->library('ion_auth');

You can also autoload the library.

## Configuration Options

Ion Auth is extremely configurable. The following configuration options are available:

- $config['tables']['groups']
- $config['tables']['users']
- $config['tables']['users_groups']
- $config['tables']['login_attempts']
- $config['site_title']
- $config['admin_email']
- $config['default_group']
- $config['admin_group']
- $config['join']['users']
- $config['join']['groups']
- $config['identity']
- $config['min_password_length']
- $config['max_password_length']
- $config['email_activation']
- $config['remember_users']
- $config['user_expire']
- $config['user_extend_on_login']
- $config['email_type']
- $config['email_templates']
- $config['email_activate']
- $config['email_forgot_password']
- $config['email_forgot_password_complete']
- $config['salt_length']
- $config['store_salt']
- $config['forgot_password_expiration']
- $config['track_login_attempts']
- $config['maximum_login_attempts']
- $config['message_start_delimiter']
- $config['message_end_delimiter']
- $config['error_start_delimiter']
- $config['error_end_delimiter']

## Using Config File

To change configuration options simply edit the config/ion_auth.php file.

### Config

Edit the ion_auth $config array as needed:

- 'tables['groups']' - The table name to use for the groups table. DEFAULT is 'groups'.
- 'tables['users']' - The table name to use for the users table. DEFAULT is 'users'.
- 'tables['users_groups']' - The table name to use for the users groups table. DEFAULT is 'users_groups'.
- 'tables['login_attempts']' - The table name to use for the login attempts table. DEFAULT is 'login_attempts'.
- 'site_title' - The title of your site, used for email.
- 'admin_email' - Your administrator email address. DEFAULT is 'admin@example.com'.
- 'default_group' - Name of the default user group. DEFAULT is 'members'.
- 'admin_group' - Name of the admin group. DEFAULT is 'admin'.
- 'join['users'] ' - Users table column you want to join WITH. DEFAULT is 'user_id'.
- 'join['groups'] ' - Group table column you want to join WITH. DEFAULT is 'group_id'.
- 'identity' - Column to use for uniquely identifing user/logging in/etc. Usual choices are 'email' OR 'username', but any unique key from your table can be used as identity. You should add an index in the users table for whatever you set this option to. DEFAULT is 'email'.
- 'min_password_length' - Minimum length of passwords. DEFAULT is '8'.
- 'max_password_length' - Maximum length of passwords. DEFAULT is '20'.
- 'email_activation' - TRUE or FALSE. Sets whether to require email activation or not. DEFAULT is 'false'.
- 'manual_activation' - TRUE or FALSE. Sets whether to require manual activation (probably by an admin user) or not. DEFAULT is 'false'.
- 'remember_users' - TRUE or FALSE. Sets whether to enable 'remember me' functionality or not. DEFAULT is 'true'.
- 'user_expire' - Sets how long to remember the user for in seconds. Set to zero for no expiration. DEFAULT is '86500'.
- 'user_extend_on_login' - TRUE or FALSE. Extend the users session expiration on login. DEFAULT is 'false'.
- 'email_type' - Email content type. DEFAULT us 'html'.
- 'email_templates' - Folder where the email view templates are stored. DEFAULT is 'auth/email/'.
- 'email_activate' - Filname of the email activation view template. DEFAULT is 'activate.tpl.php'.
- 'email_forgot_password' - Filname of the forgot password email view template. DEFAULT is 'forgot_password.tpl.php'.
- 'email_forgot_password_complete' - Filname of the forgot password complete email view template. DEFAULT is 'new_password.tpl.php'.
- 'salt_length' - Length of the encryption salt. DEFAULT is '10'.
- 'store_salt' - TRUE or FALSE. Store the salt in a separate database column or not. This can be useful for integrating with existing apps. DEFAULT is 'false'.
- 'forgot_password_expiration' - Number of seconds before a forgot password request expires. If set to 0, requests will not expire. DEFAULT is 0.
- 'track_login_attempts' - Track the number of failed login attempts for each user or ip. DEFAULT is 'false'.
- 'maximum_login_attempts' - Set the maximum number of failed login attempts. This maximum is not enforced by the library, but is used by $this->ion_auth->is_max_login_attempts_exceeded(). The controller should check this function and act appropriately. If set to 0, there is no maximum. DEFAULT is 3.
- 'message_start_delimiter' - Starting delimiter for messages. DEFAULT is '<p>'.
- 'message_end_delimiter' - Ending delimiter for messages. DEFAULT is '</p>'.
- 'error_start_delimiter' - Starting delimiter for errors. DEFAULT is '<p>'.
- 'error_end_delimiter' - Ending delimiter for errors. DEFAULT is '</p>'.

## Compatibility with CodeIgniter v2

CodeIgniter v2 requires the class file names to be lowercase. In order to support this follow the standard installation procedures and then either rename the following files or create symlinks: models/Ion_auth_model.php => models/ion_auth_model.php controllers/Auth.php => controllers/auth.php

# Class Function Reference

NOTE: Methods available in the model are called through the controller using PHP5 magic. You should never use ion_auth_model->method() in your applications.

## login()

Logs the user into the system.

Parameters

1. 'Identity' - string REQUIRED. Username, email or any unique value in your users table, depending on your configuration.
2. 'Password' - string REQUIRED.
3. 'Remember' - boolean OPTIONAL. TRUE sets the user to be remembered if enabled in the configuration.

Return

- boolean. TRUE if the user was successfully logged in FALSE if the user was not logged in.

Usage

    		$identity = 'ben.edmunds@gmail.com';
    		$password = '12345678';
    		$remember = TRUE; // remember the user
    		$this->ion_auth->login($identity, $password, $remember);

## logout()

Logs the user out of the system.

Usage

    		$this->ion_auth->logout();

## register()

Register (create) a new user.

Parameters

1. 'Identity' - string REQUIRED. This must be the value that uniquely identifies the user when he is registered. If you chose "email" as $config['identity'] in the configuration file, you must put the email of the new user.
2. 'Password' - string REQUIRED.
3. 'Email' - string REQUIRED.
4. 'Additional Data' - multidimensional array OPTIONAL.
5. 'Group' - array OPTIONAL. If not passed the default group name set in the config will be used.

Return

- mixed. The ID of the user if the user was successfully created, FALSE if the user was not created.

Usage

    		$username = 'benedmunds';
    		$password = '12345678';
    		$email = 'ben.edmunds@gmail.com';
    		$additional_data = array(
    								'first_name' => 'Ben',
    								'last_name' => 'Edmunds',
    								);
    		$group = array('1'); // Sets user to admin.

    		$this->ion_auth->register($username, $password, $email, $additional_data, $group)

## create_user()

create_user is an alternate method for register() method.

## update()

Update a user.

Parameters

1. 'Id' - integer REQUIRED.
2. 'Data' - multidimensional array REQUIRED.

Return

- boolean. TRUE if the user was successfully updated FALSE if the user was not updated.

Usage

    		$id = 12;
    		$data = array(
    					'first_name' => 'Ben',
    					'last_name' => 'Edmunds',
    					'password' => '123456789',
    					 );
    		$this->ion_auth->update($id, $data)

## update_user()

update_user() is an alternate method for update() method.

## delete_user()

Delete a user.

Parameters

1. 'Id' - integer REQUIRED.

Return

- boolean. TRUE if the user was successfully deleted FALSE if the user was not deleted.

Usage

    		$id = 12;
    		$this->ion_auth->delete_user($id)

## forgotten_password()

Resets a users password by emailing the user a reset code.

Parameters

1. 'Identity' - string REQUIRED. (as defined in config/ion_auth.php)

Return

- boolean. TRUE if the users password was successfully reset FALSE if the users password was not reset.

Usage

- this example assumes you have 'email' selected as the identity in config/ion_auth.php

    		//Working code for this example is in the example Auth controller in the github repo
    		function forgot_password()
    		{
    			$this->form_validation->set_rules('email', 'Email Address', 'required');
    			if ($this->form_validation->run() == false) {
    				//setup the input
    				$this->data['email'] = array('name'    => 'email',
    											 'id'      => 'email',
    											);
    				//set any errors and display the form
    				$this->data['message'] = (validation_errors()) ? validation_errors() : $this->session->flashdata('message');
    				$this->load->view('auth/forgot_password', $this->data);
    			}
    			else {
    				//run the forgotten password method to email an activation code to the user
    				$forgotten = $this->ion_auth->forgotten_password($this->input->post('email'));

    				if ($forgotten) { //if there were no errors
    					$this->session->set_flashdata('message', $this->ion_auth->messages());
    					redirect("auth/login", 'refresh'); //we should display a confirmation page here instead of the login page
    				}
    				else {
    					$this->session->set_flashdata('message', $this->ion_auth->errors());
    					redirect("auth/forgot_password", 'refresh');
    				}
    			}
    		}

## forgotten_password_complete()

Final step of resetting a users password. The user comes to this page from their email.

Parameters

1. 'Code' - string REQUIRED.

Return

- string. The users new password.

Usage

    		//Working code for this example is in the example Auth controller in the github repo
    		public function reset_password($code)
    		{
    			$reset = $this->ion_auth->forgotten_password_complete($code);

    			if ($reset) {  //if the reset worked then send them to the login page
    				$this->session->set_flashdata('message', $this->ion_auth->messages());
    				redirect("auth/login", 'refresh');
    			}
    			else { //if the reset didnt work then send them back to the forgot password page
    				$this->session->set_flashdata('message', $this->ion_auth->errors());
    				redirect("auth/forgot_password", 'refresh');
    			}
    		}

## logged_in()

Check to see if a user is logged in.

Return

- boolean. TRUE if the user is logged in FALSE if the user is not logged in.

Usage

    		if (!$this->ion_auth->logged_in())
    		{
    			redirect('auth/login');
    		}

## is_admin()

Check to see if the currently logged in user is an admin.

Parameters

1. 'id' - integer OPTIONAL. If a user id is not passed the id of the currently logged in user will be used.

Return

- boolean. TRUE if the user is an admin FALSE if the user is not an admin.

Usage

    		if (!$this->ion_auth->is_admin())
    		{
    			$this->session->set_flashdata('message', 'You must be an admin to view this page');
    			redirect('welcome/index');
    		}

## in_group()

Check to see if a user is in a group(s).

Parameters

1. 'Group ID or Name' - string REQUIRED. Integer or array of strings and integers.
2. 'User ID' - integer OPTIONAL. If a user id is not passed the id of the currently logged in user will be used.
3. 'Check All' - bool OPTIONAL. Whether to check if user is in all groups, or in any group.

Return

- boolean. TRUE if the user is in all or any (based on passed param), FALSE otherwise.

Usage

    		# single group (by name)
    		$group = 'gangstas';
    		if (!$this->ion_auth->in_group($group))
    		{
    			$this->session->set_flashdata('message', 'You must be a gangsta to view this page');
    			redirect('welcome/index');
    		}

    		# single group (by id)
    		$group = 1;
    		if (!$this->ion_auth->in_group($group))
    		{
    			$this->session->set_flashdata('message', 'You must be part of the group 1 to view this page');
    			redirect('welcome/index');
    		}

    		# multiple groups (by name)
    		$group = array('gangstas', 'hoodrats');
    		if (!$this->ion_auth->in_group($group))
    			$this->session->set_flashdata('message', 'You must be a gangsta OR a hoodrat to view this page');
    			redirect('welcome/index');
    		}

    		# multiple groups (by id)
    		$group = array(1, 2);
    		if (!$this->ion_auth->in_group($group))
    			$this->session->set_flashdata('message', 'You must be a part of group 1 or 2 to view this page');
    			redirect('welcome/index');
    		}

    		# multiple groups (by id and name)
    		$group = array('gangstas', 2);
    		if (!$this->ion_auth->in_group($group))
    			$this->session->set_flashdata('message', 'You must be a part of the gangstas or group 2');
    			redirect('welcome/index');
    		}

    		# multiple groups (by id) and check if all exist
    		$group = array(1, 2);
    		if (!$this->ion_auth->in_group($group, false, true))
    			$this->session->set_flashdata('message', 'You must be a part of group 1 and 2 to view this page');
    			redirect('welcome/index');
    		}

## username_check()

Check to see if the username is already registered.

Parameters

1. 'Username' - string REQUIRED.

Return

- boolean. TRUE if the user is registered FALSE if the user is not registered.

Usage

    		//This is a lame example but it works.  Usually you would use this method with form_validation.
    		$username = $this->input->post('username');
    		$password = $this->input->post('password');
    		$email = $this->input->post('email');
    		$additional_data = array(
    								'first_name' => $this->input->post('first_name'),
    								'last_name' => $this->input->post('last_name'),
    								);
    		if (!$this->ion_auth->username_check($username))
    		{
    			$group_name = 'users';
    			$this->ion_auth->register($username, $password, $email, $additional_data, $group_name)
    		}

## email_check()

Check to see if the email is already registered.

Parameters

1. 'Email' - string REQUIRED.

Return

- boolean. TRUE if the user is registered FALSE if the user is not registered.

Usage

    		//This is a lame example but it works.  Usually you would use this method with form_validation.
    		$username = $this->input->post('username');
    		$password = $this->input->post('password');
    		$email = $this->input->post('email');
    		$additional_data = array(
    								'first_name' => $this->input->post('first_name'),
    								'last_name' => $this->input->post('last_name'),
    								);
    		if (!$this->ion_auth->email_check($email))
    		{
    			$group_name = 'users';
    			$this->ion_auth->register($username, $password, $email, $additional_data, $group_name)
    		}

## identity_check()

Check to see if the identity is already registered.

Parameters

1. 'Identity' - string REQUIRED.

Return

- boolean. TRUE if the user is registered FALSE if the user is not registered.

Usage

    		//This is a lame example but it works.
    		$user = $this->ion_auth->user();
    		$data = array(
    					'identity' => $this->input->post('identity'),
    					'first_name' => $this->input->post('first_name'),
    					'last_name' => $this->input->post('last_name'),
    					 );
    		if ($data['identity'] === $user->username || $data['identity'] === $user->email || $this->ion_auth->identity_check($data['identity']) === FALSE)
    		{
    			$this->ion_auth->update_user($user->id, $data)
    		}

## is_max_login_attempts_exceeded()

If login attempt tracking is enabled, checks to see if the number of failed login attempts for this identity or ip address has been exceeded. The controller must call this method and take any necessary actions. Login attempt limits are not enforced in the library.

Parameters

1. 'Identity' - string REQUIRED.

Return

- boolean. TRUE if maximum_login_attempts is exceeded FALSE if not or if login attempts not tracked.

Usage

    		$identity = 'ben.edmunds@gmail.com';
    		if ($this->ion_auth->is_max_login_attempts_exceeded($identity))
    		{
    			$this->session->set_flashdata('message', 'You have too many login attempts');
    			redirect('welcome/index');
    		}

## get_attempts_num()

Returns the number of failed login attempts for this identity or ip address.

Parameters

1. 'Identity' - string REQUIRED.

Return

- int. The number of failed login attempts for this identity or ip address.

Usage

    		$identity = 'ben.edmunds@gmail.com';
    		$num_attempts = $this->ion_auth->get_attempts_num($identity);

## increase_login_attempts()

If login attempt tracking is enabled, records another failed login attempt for this identity or ip address. This method is automatically called during the login() method if the login failed.

Parameters

1. 'Identity' - string REQUIRED.

Usage

    		$identity = 'ben.edmunds@gmail.com';
    		$password = '12345678';
    		if ($this->ion_auth->login($identity, $password) == FALSE) {
    			$this->ion_auth->increase_login_attempts($identity)
    		}

## clear_login_attempts()

Clears all failed login attempt records for this identity or this ip address. This method is automatically called during the login() method if the login succeded.

Parameters

1. 'Identity' - string REQUIRED.

Usage

    		$identity = 'ben.edmunds@gmail.com';
    		$password = '12345678';
    		if ($this->ion_auth->login($identity, $password) == TRUE) {
    			$this->ion_auth->clear_login_attempts($identity)
    		}

## user()

Get a user.

Parameters

1. 'Id' - integer OPTIONAL. If a user id is not passed the id of the currently logged in user will be used.

Return

-     			stdClass Object (
      				[id] => 1
      				[ip_address] => 127.0.0.1
      				[username] => administrator
      				[password] => 59beecdf7fc966e2f17fd8f65a4a9aeb09d4a3d4
      				[salt] => 9462e8eee0
      				[email] => admin@admin.com
      				[activation_code] => 19e181f2ccc2a7ea58a2c0aa2b69f4355e636ef4
      				[forgotten_password_code] => 81dce1d0bc2c10fbdec7a87f1ff299ed7e4c9e4a
      				[remember_code] => 9d029802e28cd9c768e8e62277c0df49ec65c48c
      				[created_on] => 1268889823
      				[last_login] => 1279464628
      				[active] => 0
      				[first_name] => Admin
      				[last_name] => Account
      				[company] => Some Corporation
      				[phone] => (123)456-7890
      			)

Usage

    		$user = $this->ion_auth->user()->row();
    		echo $user->email;

## users()

Get the users.

Parameters

1. 'Group IDs, group names, or group IDs and names' - array OPTIONAL. If an array of group ids, of group names, or of group ids and names are passed (or a single group id or name) this will return the users in those groups.

Return

- model object

Usage

    		$users = $this->ion_auth->users()->result(); // get all users

    		$users = $this->ion_auth->users(1)->result(); // get users from group with id of '1'

    		$users = $this->ion_auth->users('members)->result(); // get users from 'members' group

    		$users = $this->ion_auth->users(array('admin','members'))->result(); // get users from 'admin' and 'members' group

    		$users = $this->ion_auth->users(array('admin',4,'members'))->result(); // get users from 'admin' group, 'members' group and group with id '4'

    		$users = $this->ion_auth->users(1)->result(); // get users from group with id of '1'

    		$users = $this->ion_auth->users('members)->result(); // get users from 'members' group

    		$users = $this->ion_auth->users(array('admin','members'))->result(); // get users from 'admin' and 'members' group

    		$users = $this->ion_auth->users(array('admin',4,'members'))->result(); // get users from 'admin' group, 'members' group and group with id '4'

## group()

Get a group.

Parameters

1. 'Id' - integer REQUIRED.

Return

- object

Usage

    		$group_id = 2;
    		$group = $this->ion_auth->group($group_id)->result();

## groups()

Get the groups.

Return

- array of objects

Usage

    		$groups = $this->ion_auth->groups()->result();

## messages()

Get messages.

Return

- string

Usage

    		$id = 12;
    		$data = array(
    					'first_name' => 'Ben',
    					'last_name' => 'Edmunds',
    					 );
    		if ($this->ion_auth->update_user($id, $data))
    		{
    			$messages = $this->ion_auth->messages();
    			echo $messages;
    		}
    		else
    		{
    			$errors = $this->ion_auth->errors();
    			echo $errors;
    		}

## messages_array()

Get messages as an array.

Return

- array

Parameters

1. 'Langify' - boolean OPTIONAL. TRUE means that the messages will be langified.

Usage

    		$id = 12;
    		$data = array(
    					'first_name' => 'Ben',
    					'last_name' => 'Edmunds',
    					 );
    		if ($this->ion_auth->update_user($id, $data))
    		{
    			$messages = $this->ion_auth->messages_array();
    			foreach ($messages as $message)
    			{
    				echo $message;
    			}
    		}
    		else
    		{
    			$errors = $this->ion_auth->errors_array();
    			foreach ($errors as $error)
    			{
    				echo $error;
    			}
    		}

## get_users_groups()

Get all groups a user is part of.

Parameters

1. 'Id' - integer OPTIONAL. If a user id is not passed the id of the currently logged in user will be used.

Return

-     			stdClass Object (
      				[id] => 1
      				[name] => admins
      				[description] => Administrator
      			)

Usage

    		$user_groups = $this->ion_auth->get_users_groups($user->id)->result();

## add_to_group()

Add user to group

Parameters

1. 'Group_id' - integer or array REQUIRED.
2. 'User_id' - integer REQUIRED.

Return

- boolean. TRUE if the user was added to group(s) FALSE if the user is not added to group(s).

Usage

            // pass an array of group ID's and user ID
            $this->ion_auth->add_to_group(array('1', '3', '6'), $user_id);

            // pass a single ID and user ID
            $this->ion_auth->add_to_group(1, $user_id);

## remove_from_group()

Remove user from group(s)

Parameters

1. 'Group_id' - NULL, integer or array REQUIRED. NULL will remove the user from all groups.
2. 'User_id' - integer REQUIRED.

Return

- boolean. TRUE if the user was removed from group(s) FALSE if the user is not removed from group(s).

Usage

            // pass an array of group ID's and user ID
            $this->ion_auth->remove_from_group(array('1', '3', '6'), $user_id);

            // pass a single ID and user ID
            $this->ion_auth->remove_from_group(1, $user_id);

            // pass NULL to remove user from all groups
            $this->ion_auth->remove_from_group(NULL, $user_id);

## create_group()

Create a group

Parameters

1. 'group_name' - string REQUIRED.
2. 'group_description' - string.

Return

- brand new group_id if the group was created, FALSE if the group creation failed.

Usage

            // pass the right arguments and it's done
            $group = $this->ion_auth->create_group('new_test_group', 'This is a test description');

            if(!$group)
            {
            	$view_errors = $this->ion_auth->messages();
          	}
          	else
          	{
          		$new_group_id = $group;
          		// do more cool stuff
          	}

## update_group()

Update details of a group

Parameters

1. 'group_id' - int REQUIRED.
2. 'group_name' - string REQUIRED.
3. 'group_description' - string.

Return

- boolean. TRUE if the group was updated, FALSE if the update failed.

Usage

    				// source these things from anywhere you like (eg., a form)
    				$group_id = 2;
    				$group_name = 'test_group_changed_name';
    				$group_description = 'I changed the name yay';

            // pass the right arguments and it's done
            $group_update = $this->ion_auth->update_group($group_id, $group_name, $group_description);

            if(!$group_update)
            {
            	$view_errors = $this->ion_auth->messages();
          	}
          	else
          	{
          		// do more cool stuff
          	}

## delete_group()

Remove a group. Removes the group details from the configured 'groups' table. Users belonging to the group are stripped of this status (references to this group are removed from users_groups), but user data itself remains untouched.

Parameters

1. 'group_id' - int REQUIRED.

Return

- boolean. TRUE if the group was deleted, FALSE if the delete failed.

Usage

    				// source this from anywhere you like (eg., a form)
    				$group_id = 2;

            // pass the right arguments and it's done
            $group_delete = $this->ion_auth->delete_group($group_id);

            if(!$group_delete)
            {
            	$view_errors = $this->ion_auth->messages();
          	}
          	else
          	{
          		// do more cool stuff
          	}

## set_message_delimiters()

Set the message delimiters.

Parameters

1. 'Start Delimiter' - string REQUIRED.
2. 'End Delimiter' - string REQUIRED.

Usage

    		$id = 12;
    		$data = array(
    					'first_name' => 'Ben',
    					'last_name' => 'Edmunds',
    					 );
    		if ($this->ion_auth->update_user($id, $data))
    		{
    			$this->ion_auth->set_message_delimiters('<p><strong>','</strong></p>');
    			$messages = $this->ion_auth->messages();
    			echo $messages;
    		}
    		else
    		{
    			$this->ion_auth->set_error_delimiters('<p><strong>','</strong></p>');
    			$errors = $this->ion_auth->errors();
    			echo $errors;
    		}

## errors()

Get the errors.

Return

- string

Usage

    		$id = 12;
    		$data = array(
    					'first_name' => 'Ben',
    					'last_name' => 'Edmunds',
    					 );
    		if ($this->ion_auth->update_user($id, $data))
    		{
    			$messages = $this->ion_auth->messages();
    			echo $messages;
    		}
    		else
    		{
    			$errors = $this->ion_auth->errors();
    			echo $errors;
    		}

## errors_array()

Get error messages as an array.

Return

- array

Parameters

1. 'Langify' - boolean OPTIONAL. TRUE means that the error messages will be langified.

Usage

    		$id = 12;
    		$data = array(
    					'first_name' => 'Ben',
    					'last_name' => 'Edmunds',
    					 );
    		if ($this->ion_auth->update_user($id, $data))
    		{
    			$messages = $this->ion_auth->messages_array();
    			foreach ($messages as $message)
    			{
    				echo $message;
    			}
    		}
    		else
    		{
    			$errors = $this->ion_auth->errors_array();
    			foreach ($errors as $error)
    			{
    				echo $error;
    			}
    		}

## set_error_delimiters()

Set the error delimiters.

Parameters

1. 'Start Delimiter' - string REQUIRED.
2. 'End Delimiter' - string REQUIRED.

Usage

    		$id = 12;
    		$data = array(
    					'first_name' => 'Ben',
    					'last_name' => 'Edmunds',
    					 );
    		if ($this->ion_auth->update_user($id, $data))
    		{
    			$this->ion_auth->set_message_delimiters('<p><strong>','</strong></p>');
    			$messages = $this->ion_auth->messages();
    			echo $messages;
    		}
    		else
    		{
    			$this->ion_auth->set_error_delimiters('<p><strong>','</strong></p>');
    			$errors = $this->ion_auth->errors();
    			echo $errors;
    		}

## set_hook()

Set a single or multiple functions to be called when trigged by trigger_events(). See an example here: https://gist.github.com/657de89b26decda2b2fa

Parameters

1. 'Event' - string REQUIRED.
2. 'Name' - string REQUIRED.
3. 'Class' - string REQUIRED.
4. 'Method' - string REQUIRED.
5. 'Arguments' - Array OPTIONAL.

Usage

    	class Accounts extends CI_Controller {

        public function __construct()
        {
          parent::__construct();

    			/*
          	make sure we loaded ion_auth2
            The following does not need to go in __construct() it just needs to be set before
            you trigger_events().
          */
          $event = 'socialpush';
          $class = 'Accounts';
          $args = array('this is the content of the message', 'billy');

          $name = 'activate_sendmail';
          $method = 'email';
          $this->ion_auth->set_hook($event, $name, $class, $method, $args);
          $name = 'call_Twitter';
          $method = 'twitter';
          $this->ion_auth->set_hook($event, $name, $class, $method, $args);
          $name = 'call_MailChimp_API';
          $method = 'mailchimp';
          $this->ion_auth->set_hook($event, $name, $class, $method, $args);
          $name = 'call_Facebook_API';
          $method = 'facebook';
          $this->ion_auth->set_hook($event, $name, $class, $method, $args);
          $name = 'call_gPlus_API';
          $method = 'gplus';
          $this->ion_auth->set_hook($event, $name, $class, $method, $args);
        }

        public function Post_Message($one)
        {
          $this->ion_auth->trigger_events('socialpush');
        }
        public function email($content, $who)
        {
        	return true;
        }
        public function twitter($content, $who)
        {
          return true;
        }
        public function mailchimp($content, $who)
        {
        	return true;
        }
        public function facebook($content, $who)
        {
        	return true;
        }
        public function gplus($content, $who)
        {
        	return true;
        }
      }

## trigger_events()

Call Additional functions to run that were registered with set_hook().

Parameters

1. 'Name' - String or Array REQUIRED.

Usage

    	 $this->ion_auth->trigger_events('socialpush');