$result = SMTP::getInstance()->send($email,'这里是邮件标题'.time(),'您的验证码是:'.$code);
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<?php
/**
 * Created by PhpStorm.
 * User: Owen Zhang
 * Date: 2019/3/19
 * Time: 下午2:19
 */

namespace appcommon;

use PHPMailerPHPMailerPHPMailer;
use Log;

class SMTP
{
    use InstanceTrait;

    /**
     * 发送邮件
     * @access public
     * @param $email 邮箱地址
     * @param $subject 邮件标题
     * @param $content 邮件内容
     * @param $isHtml 是否以HTML文档格式发送  发送后客户端可直接显示对应HTML内容
     * @return array
     */
    public function send($email, $subject, $content, $isHtml = false)
    {
        $mail = new PHPMailer;

        $mail->isSMTP();

        $mail->CharSet = "UTF-8";

        $mail->Encoding = 'base64';

        $mail->SMTPDebug = config("app_env") == "local" ? 1 : 0; //是否调试

        $mail->SMTPAuth = true;

        $mail->SMTPSecure = 'ssl';                    // 允许 TLS 或者ssl协议

        $mail->Host = "smtp.163.com";

//        $mail->Port = config("app_env") == "local" ? 465 : 587;
        $mail->Port = 465;

        $mail->Username = "owen24@163.com";

        $mail->Password = "EXVH123456KDSGGRJ";

        $mail->setFrom("owen24@163.com", "owenweb 社区"); // 发件人邮箱和名称

        $mail->Subject = $subject;

        $mail->Body = $content;

        $mail->isHTML($isHtml); //是否启用html

        $mail->addAddress($email); //收件用户

        $mail->send();

        if (!$mail->send()) {
            var_dump($content);
            var_dump($mail->ErrorInfo);
//            Log::warning("邮件发送失败： " . $mail->ErrorInfo, []);
            return ["code" => _MSG_SYSTEM_ERROR, "msg" => "邮件发送失败"];
        }
        return ["code" => _MSG_SYSTEM_SUCCESS, "msg" => "邮件发送成功"];
    }
}
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