为什么在此 Codeigniter 3 应用程序中通过电子邮件发送密码重置链接失败？

Question

我正在 Codeigniter 3.1.8 和 Bootstrap 4 中开发基本的 blog application。

我已经为这个应用程序添加了一个注册和登录系统。

我在开发密码重置功能时遇到了这个问题：包含重置链接的电子邮件未发送（或可能未收到）。

密码重置表格采用注册时使用的电子邮件地址：

<?php echo form_open(base_url('newpassword')); ?>
  <div class="form-group <?php if(form_error('email')) echo 'has-error';?>">
    <input type="text" name="email" id="email" class="form-control" placeholder="Email">
    <?php if(form_error('email')) echo form_error('email'); ?> 
  </div>

  <div class="form-group mb-2">
    <input type="submit" value="Reset password" class="btn btn-block btn-md btn-success">
  </div>            
<?php echo form_close(); ?>

控制器：

class Newpassword extends CI_Controller {
    public function __construct()
    {
        parent::__construct();
    }

    private $headers = '';
    private $user_email = '';
    private $subject = 'Pasword reset link';
    private $reset_link = '<a href="#">Dummy Reset Link</a>';
    private $body = '';

    public function index() {
        // Display form
        $data = $this->Static_model->get_static_data();
        $data['pages'] = $this->Pages_model->get_pages();
        $data['tagline'] = 'Reset your password';
        $data['categories'] = $this->Categories_model->get_categories();

        // Form validation rules
        $this->form_validation->set_rules('email', 'Email', 'required|trim|valid_email');
        $this->form_validation->set_error_delimiters('<p class="error-message">', '</p>');

        if(!$this->form_validation->run()) {
            $this->load->view('partials/header', $data);
            $this->load->view('auth/passwordreset');
            $this->load->view('partials/footer');
        } else {
            if ($this->Usermodel->email_exists()) {
                $this->user_email = $this->input->post('email');
                $this->body = "Your password reset link: $this->reset_link\n\nAfter clicking it you will be redirected to a page on the website where you will be able to set a new pasword.";
                $this->headers = "From: noreply@yourdomain.com\n";

                // Send mail and rediect
                $this->sendResetMail();             
            } else {
                $this->session->set_flashdata('email_non_existent', "The email you provided does not exist in our database");
            }
           redirect('newpassword');
        }
    }

    public function sendResetMail() {
        if (mail($this->user_email, $this->subject, $this->body, $this->headers)) {
            $this->session->set_flashdata('reset_mail_confirm', "A pasword reset link was send to the email address $this->user_email");
        } else {
            $this->session->set_flashdata('reset_mail_fail', "Our atempt to send a pasword reset link to $this->user_email has failed");
        }
    }
}

检查邮箱是否存在的方法（注册时也用，有效）：

public function email_exists() {    
    $query = $this->db->get_where('authors', ['email' => $this->input->post('email')]);
    return $query->num_rows() > 0;
}

虽然我收到确认电子邮件已发送的 Flash 消息，但我实际上并没有收到电子邮件。

我的赌注在哪里？

Answer 1

我修改了你的课程以使用内置的电子邮件库并混合了我的代码来自一个工作项目：

class Newpassword extends CI_Controller {
    public function __construct()
    {
        parent::__construct();
    }

    // Sender email
    private $my_email = "example@example.com";
    // Sender name
    private $my_name = "Example";
    

    private $user_email = '';
    private $subject = 'Pasword reset link';
    private $reset_link = '<a href="#">Dummy Reset Link</a>';
    private $body = '';

    public function index() {
        // Display form
        $data = $this->Static_model->get_static_data();
        $data['pages'] = $this->Pages_model->get_pages();
        $data['tagline'] = 'Reset your password';
        $data['categories'] = $this->Categories_model->get_categories();

        // Form validation rules
        $this->form_validation->set_rules('email', 'Email', 'required|trim|valid_email');
        $this->form_validation->set_error_delimiters('<p class="error-message">', '</p>');

        if(!$this->form_validation->run()) {
            $this->load->view('partials/header', $data);
            $this->load->view('auth/passwordreset');
            $this->load->view('partials/footer');
        } else {
            if ($this->Usermodel->email_exists()) {
                $this->user_email = $this->input->post('email');
                $this->body = "Your password reset link: $this->reset_link\n\nAfter clicking it you will be redirected to a page on the website where you will be able to set a new pasword.";

                // Send mail and rediect
                $this->sendResetMail();             
            } else {
                $this->session->set_flashdata('email_non_existent', "The email you provided does not exist in our database");
            }
           redirect('newpassword');
        }
    }

    public function sendResetMail() {
        // Loading the Email library
        $config['protocol'] = 'sendmail';
        $config['charset'] = 'utf-8';
        $config['mailtype'] = 'html';

        if($this->load->is_loaded('email')){
            $this->email->initialize($config);
        }
        else{
            $this->load->library('email',$config);
        }

        // Build the body and meta data of the email message
        $this->email->from($this->my_email,$this->my_name);
        $this->email->to($this->user_email);
        $this->email->subject($this->subject);
        
        $this->email->message($this->body);

        if($this->email->send()){
            $this->session->set_flashdata('reset_mail_confirm', "A pasword reset link was send to the email address $this->user_email");
        }else{
            $this->session->set_flashdata('reset_mail_fail', "Our atempt to send a pasword reset link to $this->user_email has failed");
        }
    }
}