forget password function.php

<?php

defined('BASEPATH') OR exit('No direct script access allowed');

/**
 * Description of Authentication
 * Function forgot_password
 * forgot_password_fix recontructer forgot_password for if if if if if
 * use http://www.codeigniter.com/user_guide/helpers/string_helper.html make random new pass work
 * use http://www.codeigniter.com/user_guide/libraries/email.html for send email 
 * use http://php.net/manual/en/function.filter-var.php for chek correct email
 * step 1 check email http://phpsolutionpro.blogspot.com/2013/04/codeigniter-get-your-forgotten-password.html
 * step 2 tao pass random - help - string- http://www.codeigniter.com/user_guide/helpers/string_helper.html
 * step 3 update database http://phpsolutionpro.blogspot.com/2013/04/codeigniter-get-your-forgotten-password_7.html
 * step 4 send mail	
 * step 5 check mail	
 * step 6 login	
 * Step it not is for if before forgot_password_fix
 * @author JTec-QuangChau
 */
class Authentication extends My_Controller {

    //put your code here
    public function __construct() {
        parent::__construct();
        $this->lang->load('content_back');
    }

    public function forgot_password() {
        $data = array();
        if ($this->input->method() == 'post') {
            if ($this->input->post() != NULL) {
                if ($this->input->post('email') != NULL) {
                    $email = $this->input->post('email');
                    if (filter_var($email, FILTER_VALIDATE_EMAIL)) {
                        $this->load->model('Account_model');
                        $result_model = $this->Account_model->forgot_pass_model($email);
                        if ($result_model) {
                            //send mail
                            $this->load->helper('string');
                            $pass_new = random_string('alnum', 8);
                            $this->load->model('Account_model');
                            $data_result = $this->Account_model->update_pass_email($email, $pass_new);
                            if ($data_result) {
                                $config = Array(
                                    'protocol' => 'smtp',
                                    'smtp_host' => 'ssl://smtp.googlemail.com',
                                    'smtp_port' => 465,
                                    'smtp_user' => 'test.****.chau@gmail.com', // change it to yours
                                    'smtp_pass' => 'jtec****', // change it to yours it is password login gmail must success
                                    'mailtype' => 'html',
                                    'charset' => 'iso-8859-1',
                                    'wordwrap' => TRUE
                                );

                                $this->load->library('email', $config);
                                $this->email->set_newline("\r\n");
                                $this->email->from('test.****.chau@gmail.com'); // change it to yours
                                $this->email->to($email); // change it to yours
                                $this->email->subject('test_subject from localhost/blog');
                                $filename = 'D:/info.png';
                                $this->email->attach($filename);
                                $message = 'Password is ' . $pass_new;
                                $this->email->message($message);
                                if ($this->email->send()) {

                                    $data['message']['sucess'] = 'System have send mail to ' . $email;
                                } else {
                                    show_error($this->email->print_debugger());
                                }
                            } else {
                                $data['message']['error'] = 'Error when save database';
                            }
                        } else {
                            $data['message']['error'] = 'Email check in database incorrect';
                        }
                    } else {
                        $data['message']['error'] = 'Not is address email';
                    }
                } else {
                    $data['message']['error'] = 'Not empty email';
                }
            } else {
                //load view
            }
        }
        $this->breadcrumbs->push($this->lang->line('home'), '/back_end/authentication/home');
        $this->breadcrumbs->push($this->lang->line('forgot_p_breadcrum'), '/back_end/authentication/forget_password');
        $data['content'] = 'back_end/forgot_pass_view';
        $this->load->view('layout_back_end_view', $data);
    }

    public function forgot_password_fix() {
        $data = array();
        if ($this->input->method() == 'post') {
            $step1 = true;
        }

        if ($this->input->post('email') != NULL) {
            $step2 = true;
        } else {
            $data['message']['error'] = 'Not empty email';
        }
        if ($this->input->post() != NULL) {
            $step3 = true;
        } else {
            //load view
        }
        $email = $this->input->post('email');
        if (filter_var($email, FILTER_VALIDATE_EMAIL)) {
            $step4 = true;
        } else {
            $data['message']['error'] = 'Not is address email';
        }


        if ($step1 && $step2 && $step3 && $step4) {

            $this->load->model('Account_model');
            $result_model = $this->Account_model->forgot_pass_model($email);
            if ($result_model) {
                //send mail
                $this->load->helper('string');
                $pass_new = random_string('alnum', 8);
                $this->load->model('Account_model');
                $data_result = $this->Account_model->update_pass_email($email, $pass_new);
                if ($data_result) {
                    $config = Array(
                        'protocol' => 'smtp',
                        'smtp_host' => 'ssl://smtp.googlemail.com',
                        'smtp_port' => 465,
                        'smtp_user' => 'test.email.chau@gmail.com', // change it to yours
                        'smtp_pass' => 'jtec1234', // change it to yours
                        'mailtype' => 'html',
                        'charset' => 'iso-8859-1',
                        'wordwrap' => TRUE
                    );

                    $this->load->library('email', $config);
                    $this->email->set_newline("\r\n");
                    $this->email->from('test.****.chau@gmail.com'); // change it to yours
                    $this->email->to($email); // change it to yours
                    $this->email->subject('test_subject from localhost/blog');
                    $filename = 'D:/info.png';
                    $this->email->attach($filename);
                    $message = 'Password is ' . $pass_new;
                    $this->email->message($message);
                    if ($this->email->send()) {

                        $data['message']['sucess'] = 'System have send mail to ' . $email;
                    } else {
                        show_error($this->email->print_debugger());
                    }
                } else {
                    $data['message']['error'] = 'Error when save database';
                }
            } else {
                $data['message']['error'] = 'Email check in database incorrect';
            }
        }

        $this->breadcrumbs->push($this->lang->line('home'), '/back_end/authentication/home');
        $this->breadcrumbs->push($this->lang->line('forgot_p_breadcrum'), '/back_end/authentication/forget_password');
        $data['content'] = 'back_end/forgot_pass_view';
        $this->load->view('layout_back_end_view', $data);
    }

}