如何使用 PHP 发 Email？

昨天打了三局排位：一局全是送人头，跟葫芦娃救爷爷一样；一局遇见挂机狗，对面赢得也很吃力；一局顺风局，估计是匹配了第一局的我们吧……

So我要给天美发邮件：你丫影响我充钱的心情了！！！

/**
 * 发送邮件
 * @return [type] [description]
 */
private function sendMail() 
{
  //////////////////配置信息////////////////////////
  //Smtp认证的用户名，类似test@163.com，或者test
  $smtp_acc = $from = "test@163.com"; 
  //Smtp认证的密码，一般等同pop3密码
  $smtp_pass="********"; 
  //SMTP服务器地址，类似 smtp.163.com
  $smtp_host="mail.163.com"; 
  /////////////////配置信息END///////////////////////
  $to = 'BD_IEG@qq.com';
  $subject = '问题反馈';
  $body = '天美，你这样的匹配机制，严重影响我充钱的心情了！！！'; 
  $loc_host = "www.QQ.com"; //发信计算机名，可随意
  $headers = "Content-Type: text/html; charset=\"UTF-8\"\r\nContent-Transfer-Encoding: base64";
  $lb="\r\n"; //linebreak
  $hdr = explode($lb,$headers); //解析后的hdr
  if($body)
  {
    $bdy = preg_replace("/^\./","..",explode($lb,$body));//解析后的Body
  }
  $smtp = array(
    //1、EHLO，期待返回220或者250
    array("EHLO ".$loc_host.$lb,"220,250","HELO error: "),
    //2、发送Auth Login，期待返回334
    array("AUTH LOGIN".$lb,"334","AUTH error:"),
    //3、发送经过Base64编码的用户名，期待返回334
    array(base64_encode($smtp_acc).$lb,"334","AUTHENTIFICATION error : "),
    //4、发送经过Base64编码的密码，期待返回235
    array(base64_encode($smtp_pass).$lb,"235","AUTHENTIFICATION error : ")
  );
  //5、发送Mail From，期待返回250
  $smtp[] = array("MAIL FROM: <".$from.">".$lb,"250","MAIL FROM error: ");
  //6、发送Rcpt To。期待返回250
  $smtp[] = array("RCPT TO: <".$to.">".$lb,"250","RCPT TO error: ");
  //7、发送DATA，期待返回354
  $smtp[] = array("DATA".$lb,"354","DATA error: ");
  //8.0、发送From
  $smtp[] = array("From: ".$from.$lb,"","");
  //8.2、发送To
  $smtp[] = array("To: ".$to.$lb,"","");
  //8.1、发送标题
  $smtp[] = array("Subject: "."=?"."UTF-8?B?".base64_encode($subject)."?=".$lb,"","");
  //8.3、发送其他Header内容
  foreach($hdr as $h){
    $smtp[] = array($h.$lb,"","");
  }
  //8.4、发送一个空行，结束Header发送
  $smtp[] = array($lb,"","");
  //8.5、发送信件主体
  if($bdy){
    foreach($bdy as $b){
      $smtp[] = array(base64_encode($b.$lb).$lb,"","");
    }
  }
  //9、发送“.”表示信件结束，期待返回250
  $smtp[] = array(".".$lb,"250","DATA(end)error: ");
  //10、发送Quit，退出，期待返回221
  $smtp[] = array("QUIT".$lb,"221","QUIT error: ");
  //打开smtp服务器端口
  $fp = @fsockopen($smtp_host, 25);
  if (!$fp){
    echo "<b>Error:</b> Cannot connect to ".$smtp_host."<br>";
  }
  while($result = @fgets($fp, 1024)){
    if(substr($result,3,1) == " "){
      break;
    }
  }
  $result_str="";
  //发送smtp数组中的命令/数据
  foreach($smtp as $req){
    //发送信息
    @fputs($fp, $req[0]);
    //如果需要接收服务器返回信息，则
    if($req[1]){
      //接收信息
      while($result = @fgets($fp, 1024)){
        if(substr($result,3,1) == " "){
          break;
        }
      };
      if (!strstr($req[1],substr($result,0,3))){
        $result_str.=$req[2].$result."<br>";
      }
    }
  }
  //关闭连接
  @fclose($fp);
  echo $result_str;
}

OK，坐等回信……