OpenCart 使用 PHPMailer 替换默认的邮件类

mail.php

<?php
class Mail {
    protected $to;
    protected $from;
    protected $sender;
    protected $subject;
    protected $text;
    protected $html;
    protected $attachments = array();
    public $protocol = 'mail';
    public $hostname;
    public $username;
    public $password;
    public $port = 25;
    public $timeout = 5;
    public $newline = "\n";
    public $crlf = "\r\n";
    public $verp = false;
    public $parameter = '';

    public function setTo($to) {
        $this->to = $to;
    }

    public function setFrom($from) {
        $this->from = $from;
    }

    public function setSender($sender) {
        $this->sender = $sender;
    }

    public function setSubject($subject) {
        $this->subject = $subject;
    }

    public function setText($text) {
        $this->text = $text;
    }

    public function setHtml($html) {
        $this->html = $html;
    }

    public function addAttachment($filename) {
        $this->attachments[] = $filename;
    }

    public function send() {
        if (!$this->to) {
            trigger_error('Error: E-Mail to required!');
            exit();         
        }

        if (!$this->from) {
            trigger_error('Error: E-Mail from required!');
            exit();                 
        }

        if (!$this->sender) {
            trigger_error('Error: E-Mail sender required!');
            exit();                 
        }

        if (!$this->subject) {
            trigger_error('Error: E-Mail subject required!');
            exit();                 
        }

        if ((!$this->text) && (!$this->html)) {
            trigger_error('Error: E-Mail message required!');
            exit();                 
        }

        if ($this->protocol == 'mail') {

            if (is_array($this->to)) {
                $to = implode(',', $this->to);
            } else {
                $to = $this->to;
            }

            $boundary = '----=_NextPart_' . md5(time());

            $header = '';
            
            $header .= 'MIME-Version: 1.0' . $this->newline;
            
            $header .= 'Date: ' . date('D, d M Y H:i:s O') . $this->newline;
            $header .= 'From: ' . '=?UTF-8?B?' . base64_encode($this->sender) . '?=' . ' <' . $this->from . '>' . $this->newline;
            $header .= 'Reply-To: ' . '=?UTF-8?B?' . base64_encode($this->sender) . '?=' . ' <' . $this->from . '>' . $this->newline;
            $header .= 'Return-Path: ' . $this->from . $this->newline;
            $header .= 'X-Mailer: PHP/' . phpversion() . $this->newline;
            $header .= 'Content-Type: multipart/related; boundary="' . $boundary . '"' . $this->newline . $this->newline;

            if (!$this->html) {
                $message  = '--' . $boundary . $this->newline;
                $message .= 'Content-Type: text/plain; charset="utf-8"' . $this->newline;
                $message .= 'Content-Transfer-Encoding: 8bit' . $this->newline . $this->newline;
                $message .= $this->text . $this->newline;
            } else {
                $message  = '--' . $boundary . $this->newline;
                $message .= 'Content-Type: multipart/alternative; boundary="' . $boundary . '_alt"' . $this->newline . $this->newline;
                $message .= '--' . $boundary . '_alt' . $this->newline;
                $message .= 'Content-Type: text/plain; charset="utf-8"' . $this->newline;
                $message .= 'Content-Transfer-Encoding: 8bit' . $this->newline . $this->newline;

                if ($this->text) {
                    $message .= $this->text . $this->newline;
                } else {
                    $message .= 'This is a HTML email and your email client software does not support HTML email!' . $this->newline;
                }

                $message .= '--' . $boundary . '_alt' . $this->newline;
                $message .= 'Content-Type: text/html; charset="utf-8"' . $this->newline;
                $message .= 'Content-Transfer-Encoding: 8bit' . $this->newline . $this->newline;
                $message .= $this->html . $this->newline;
                $message .= '--' . $boundary . '_alt--' . $this->newline;
            }

            foreach ($this->attachments as $attachment) {
                if (file_exists($attachment)) {
                    $handle = fopen($attachment, 'r');
                    
                    $content = fread($handle, filesize($attachment));
                    
                    fclose($handle);

                    $message .= '--' . $boundary . $this->newline;
                    $message .= 'Content-Type: application/octet-stream; name="' . basename($attachment) . '"' . $this->newline;
                    $message .= 'Content-Transfer-Encoding: base64' . $this->newline;
                    $message .= 'Content-Disposition: attachment; filename="' . basename($attachment) . '"' . $this->newline;
                    $message .= 'Content-ID: <' . basename(urlencode($attachment)) . '>' . $this->newline;
                    $message .= 'X-Attachment-Id: ' . basename(urlencode($attachment)) . $this->newline . $this->newline;
                    $message .= chunk_split(base64_encode($content));
                }
            }

            $message .= '--' . $boundary . '--' . $this->newline;

            ini_set('sendmail_from', $this->from);

            if ($this->parameter) {
                mail($to, '=?UTF-8?B?' . base64_encode($this->subject) . '?=', $message, $header, $this->parameter);
            } else {
                mail($to, '=?UTF-8?B?' . base64_encode($this->subject) . '?=', $message, $header);
            }
        } elseif ($this->protocol == 'smtp') {
            if (file_exists(DIR_SYSTEM . 'phpmailer/PHPMailerAutoload.php')) {
                require_once(DIR_SYSTEM . 'phpmailer/PHPMailerAutoload.php');

                $mail = new PHPMailer;

                // $mail->SMTPDebug = 3;

                $mail->isSMTP();
                $mail->Host = $this->hostname;
                $mail->SMTPAuth = true;
                $mail->Username = $this->username;
                $mail->Password = $this->password;
                if ((int)$this->port == 587) {
                    $mail->SMTPSecure = 'tls';
                } else {
                    $mail->SMTPSecure = 'ssl';
                }
                $mail->Port = $this->port;

                $mail->setFrom($this->from, $this->sender);
                if (is_array($this->to)) {
                    foreach ($this->to as $to) {
                        $mail->addAddress($to);
                    }
                } else {
                    $mail->addAddress($this->to);
                }

                foreach ($this->attachments as $attachment) {
                    if (file_exists($attachment)) {
                        $mail->addAttachment($attachment);
                    }
                }

                $mail->CharSet = 'utf-8';
                $mail->isHTML(true);

                $mail->Subject = $this->subject;
                $mail->Body = $this->html ? $this->html : $this->text;

                // https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting#user-content-php-56-certificate-verification-failure
                if (version_compare(PHP_VERSION, '5.6.0', '>=')) {
                    $mail->SMTPOptions = array(
                        'ssl' => array(
                            'verify_peer' => false,
                            'verify_peer_name' => false,
                            'allow_self_signed' => true
                        )
                    );
                }

                if (!$mail->send()) {
                    echo "Message could not be sent.\n";
                    echo "Mailer Error: " . $mail->ErrorInfo;
                    exit();
                }
            } else {
                echo "PHPMailer does not exists.\n";
                exit();
            }
        }
    }
}
?>