邮件发送

/**
 * 邮件发送
 * @param $to    接收人
 * @param string $subject   邮件标题
 * @param string $content   邮件内容(html模板渲染后的内容)
 * @throws Exception
 * @throws phpmailerException
 */
function send_email($to,$subject='',$content=''){
    require_once THINK_PATH.'Library/Vendor/phpmailer/PHPMailerAutoload.php';
    $mail = new PHPMailer;
    $config = tpCache('smtp');//获取文件里面的参数
   $mail->CharSet  = 'UTF-8'; //设定邮件编码，默认ISO-8859-1，如果发中文此项必须设置，否则乱码
    $mail->isSMTP();
    //Enable SMTP debugging
    // 0 = off (for production use)
    // 1 = client messages
    // 2 = client and server messages
    $mail->SMTPDebug = 0;
    //调试输出格式
   //$mail->Debugoutput = 'html';
    //smtp服务器
    $mail->Host = $config['smtp_server'];
    //端口 - likely to be 25, 465 or 587
    $mail->Port = $config['smtp_port'];
   
   if($mail->Port === 465) $mail->SMTPSecure = 'ssl';// 使用安全协议
    //Whether to use SMTP authentication
    $mail->SMTPAuth = true;
    //用户名
    $mail->Username = $config['smtp_user'];
    //密码
    $mail->Password = $config['smtp_pwd'];
    //Set who the message is to be sent from
    $mail->setFrom($config['smtp_user']);
    //回复地址
    //$mail->addReplyTo('replyto@example.com', 'First Last');
    //接收邮件方
    if(is_array($to)){
       foreach ($to as $v){
          $mail->addAddress($v);
       }
    }else{
       $mail->addAddress($to);
    }

    $mail->isHTML(true);// send as HTML
    //标题
    $mail->Subject = $subject;
    //HTML内容转换
    $mail->msgHTML($content);
    //Replace the plain text body with one created manually
    //$mail->AltBody = 'This is a plain-text message body';
    //添加附件
    //$mail->addAttachment('images/phpmailer_mini.png');
    //send the message, check for errors
    return $mail->send();
}