简单邮件传输协议SMTP

  1 <?php
  2 
  3 class smtp_email
  4 {
  5     private $host;                    //保存要连接的smtp服务器
  6     private $port;                    //要绑定的端口，默认为25
  7     private $user;                    //要登录SMTP服务器的用户名
  8     private $pass;                    //要登录SMTP服务器的密码
  9     private $debug = false;        //标识是都开启调试模式，默认关闭
 10     private $sock;                    //保存与SMTP服务器连接的句柄
 11     private $mail_format = 0;        //表示使用什么格式发送邮件，0位普通文本，1为HTML邮件
 12 
 13     //初始化
 14     public function __construct($host, $port, $user, $pass, $format = 1, $debug = 0)
 15     {
 16         $this->host = $host;
 17         $this->port = $port;
 18         $this->user = base64_encode($user);
 19         $this->pass = base64_encode($pass);
 20         $this->mail_format = $format;
 21         $this->debug = $debug;
 22 
 23         $this->sock = fsockopen($this->host, $this->port, &$errno, &$errstr, 10);    //使用fsockopen()连接服务器
 24 
 25         if (!$this->sock) {
 26             exit("Error Number:$errno, Error Message:$errstr");
 27         }
 28 
 29         $response = fgets($this->sock);                    //获取服务器信息
 30         if (strstr($response, "220") == false) {
 31             exit("server error:$response\n");
 32         }
 33     }
 34 
 35     //根据用户是否开启调试模式显示调试信息
 36     private function show_debug($message)
 37     {
 38         if ($this->debug) {
 39             echo "<p>Debug:$message</p>\n";
 40         }
 41     }
 42 
 43     //把命令发送到服务器中执行，然后取的服务器的反馈信息
 44     private function do_command($cmd, $return_code)
 45     {
 46         fwrite($this->sock, $cmd);
 47 
 48         $response = fgets($this->sock);
 49         if (strstr($response, $return_code) == false) {
 50             $this->show_debug($response);
 51             return false;
 52         }
 53 
 54         return true;
 55     }
 56 
 57     //验证邮箱地址是否合法
 58     private function is_email($email)
 59     {
 60         $pattern = ‘/^[^_][\w]*@[\w.]+[\w]*[^_]$/‘;
 61         if (preg_match_all($pattern, $email, $matches)) {
 62             return true;
 63         } else {
 64             return false;
 65         }
 66     }
 67 
 68     //发送邮件  $from：发件人email   $to：收件人email    $subject：邮件主题   $body：邮件内容
 69     public function send_email($from, $to, $subject, $body)
 70     {
 71         if (!$this->is_email($from) || !$this->is_email($to)) {
 72             $this->show_debug("please enter vaild from/to email.");
 73             return false;
 74         }
 75 
 76         if (empty($subject) || empty($body)) {
 77             $this->show_debug("please enter subject/content.");
 78             return false;
 79         }
 80 
 81         $detail = "From:{$from}\r\n";
 82         $detail .= "To:{$to}\r\n";
 83         $detail .= "Subject:{$subject}\r\n";
 84 
 85         if ($this->mail_format == 1) {
 86             $detail .= "Content-Type:text/html;\r\n";
 87         } else {
 88             $detail .= "Content-Type:text/plain;\r\n";
 89         }
 90 
 91         $detail .="charset = gb2312\r\n\r\n" ;
 92         $detail .= "$body";
 93 
 94         $this->do_command("HELO smtp.qq.com\r\n", 250);
 95         $this->do_command("AUTH LOGIN\r\n", 334);
 96         $this->do_command($this->user."\r\n", 334);
 97         $this->do_command($this->pass."\r\n", 235);
 98         $this->do_command("MAIL FROM:<".$from.">\r\n", 250);
 99         $this->do_command("RCPT TO<".$to.">\r\n", 250);
100         $this->do_command("DATA\r\n", 354);
101         $this->do_command($detail."\r\n.\r\n", 250);
102         $this->do_command("QUIT\r\n", 221);
103 
104         return true;
105     }
106 }
107 
108 
109 ?>

 1 <?php
 2 
 3     include("smtp.class.php");
 4 
 5     $host = "smtp.163.com";
 6     $port = 25;
 7     $user = "onedream_kelly@163.com";
 8     $pass = "**********";
 9 
10     $from = "onedream_kelly@163.com";
11     $to = "****@163.com";
12     $subject = "记得收衣服啊";
13     $content = "今天我不回家，你记得收到衣服，免得到时衣服淋湿了没得穿";
14 
15     $mail = new smtp_email($host, $port, $user, $pass, 1);
16     $res = $mail->send_email($from, $to, $subject, $content);
17     if ($res == true) {
18         echo "send success";
19     } else {
20         echo "send fail";
21     }
22 ?>