用php自动发邮件的简单实现

如何自动发送邮件？

　　php自带mail方法，不过只能在linux下直接使用，windows下要配置smtp服务器，有点麻烦。

　　可以用一些现成的类来实现，比如很有名的phpmailer，功能很强大，代码也多，这里使用个相对简单的。

 <?php
 class smtp
 {
     /* Public Variables */
     var $smtp_port;
     var $time_out;
     var $host_name;
     var $log_file;
     var $relay_host;
     var $debug;
     var $auth;
     var $user;
     var $pass; 

     /* Private Variables */
     var $sock; 

     /* Constractor */
     function smtp($relay_host = "", $smtp_port = 25,$auth = false,$user,$pass)
     {
         $this->debug = FALSE;
         $this->smtp_port = $smtp_port;
         $this->relay_host = $relay_host;
         $this->time_out = 30; //is used in fsockopen()
         $this->auth = $auth;//auth
         $this->user = $user;
         $this->pass = $pass;
         $this->host_name = "localhost"; //is used in HELO command
         $this->log_file = "";
         $this->sock = FALSE;
 } 

     /* Main Function */
     function sendmail($to, $from, $subject = "", $body = "", $mailtype, $cc = "", $bcc = "", $additional_headers = "")
     {
         $mail_from = $this->get_address($this->strip_comment($from));
         $body = ereg_replace("(^|(\r\n))(\.)", "\1.\3", $body);
         $header .= "MIME-Version:1.0\r\n";
         if($mailtype=="HTML")
         {
             $header .= "Content-Type:text/html\r\n";
         }
         $header .= "To: ".$to."\r\n";
         if ($cc != "")
         {
             $header .= "Cc: ".$cc."\r\n";
         }
         $header .= "From: $from<".$from.">\r\n";
         $header .= "Subject: ".$subject."\r\n";
         $header .= $additional_headers;
         $header .= "Date: ".date("r")."\r\n";
         $header .= "X-Mailer:By Redhat (PHP/".phpversion().")\r\n";
         list($msec, $sec) = explode(" ", microtime());
         $header .= "Message-ID: <".date("YmdHis", $sec).".".($msec*1000000).".".$mail_from.">\r\n";
         $TO = explode(",", $this->strip_comment($to)); 

         if ($cc != "")
         {
             $TO = array_merge($TO, explode(",", $this->strip_comment($cc)));
             }
         if ($bcc != "")
         {
             $TO = array_merge($TO, explode(",", $this->strip_comment($bcc)));
         }
         $sent = TRUE;
         foreach ($TO as $rcpt_to)
         {
             $rcpt_to = $this->get_address($rcpt_to);
             if (!$this->smtp_sockopen($rcpt_to))
             {
                 $this->log_write("Error: Cannot send email to ".$rcpt_to."\n");
                 $sent = FALSE;
                 continue;
             }
             if ($this->smtp_send($this->host_name, $mail_from, $rcpt_to, $header, $body))
             {
                 $this->log_write("E-mail has been sent to <".$rcpt_to.">\n");
             }
             else
             {
                 $this->log_write("Error: Cannot send email to <".$rcpt_to.">\n");
                 $sent = FALSE;
             }
             fclose($this->sock);
             $this->log_write("Disconnected from remote host\n");
         }
         return $sent;
     } 

     /* Private Functions */
     function smtp_send($helo, $from, $to, $header, $body = "")
     {
         if (!$this->smtp_putcmd("HELO", $helo))
         {
             return $this->smtp_error("sending HELO command");
         } 

         #auth
         if($this->auth)
         {
             if (!$this->smtp_putcmd("AUTH LOGIN", base64_encode($this->user)))
             {
                 return $this->smtp_error("sending HELO command");
             }
             if (!$this->smtp_putcmd("", base64_encode($this->pass)))
             {
                 return $this->smtp_error("sending HELO command");
             }
         }
         if (!$this->smtp_putcmd("MAIL", "FROM:<".$from.">"))
         {
             return $this->smtp_error("sending MAIL FROM command");
         }
         if (!$this->smtp_putcmd("RCPT", "TO:<".$to.">"))
         {
             return $this->smtp_error("sending RCPT TO command");
         }
         if (!$this->smtp_putcmd("DATA"))
         {
             return $this->smtp_error("sending DATA command");
         }
         if (!$this->smtp_message($header, $body))
         {
             return $this->smtp_error("sending message");
         }
         if (!$this->smtp_eom())
         {
             return $this->smtp_error("sending <CR><LF>.<CR><LF> [EOM]");
         }
         if (!$this->smtp_putcmd("QUIT"))
         {
             return $this->smtp_error("sending QUIT command");
         }
         return TRUE;
     } 

     function smtp_sockopen($address)
     {
         if ($this->relay_host == "")
         {
             return $this->smtp_sockopen_mx($address);
         }
         else
         {
             return $this->smtp_sockopen_relay();
         }
     } 

     function smtp_sockopen_relay()
     {
         $this->log_write("Trying to ".$this->relay_host.":".$this->smtp_port."\n");
         $this->sock = @fsockopen($this->relay_host, $this->smtp_port, $errno, $errstr, $this->time_out);
         if (!($this->sock && $this->smtp_ok()))
         {
             $this->log_write("Error: Cannot connenct to relay host ".$this->relay_host."\n");
             $this->log_write("Error: ".$errstr." (".$errno.")\n");
             return FALSE;
         }
         $this->log_write("Connected to relay host ".$this->relay_host."\n");
         return TRUE;;
     } 

     function smtp_sockopen_mx($address)
     {
         $domain = ereg_replace("^.+@([^@]+)$", "\1", $address);
         if (!@getmxrr($domain, $MXHOSTS))
         {
             $this->log_write("Error: Cannot resolve MX \"".$domain."\"\n");
             return FALSE;
         }
         foreach ($MXHOSTS as $host)
         {
             $this->log_write("Trying to ".$host.":".$this->smtp_port."\n");
             $this->sock = @fsockopen($host, $this->smtp_port, $errno, $errstr, $this->time_out);
             if (!($this->sock && $this->smtp_ok()))
             {
                 $this->log_write("Warning: Cannot connect to mx host ".$host."\n");
                 $this->log_write("Error: ".$errstr." (".$errno.")\n");
                 continue;
             }
             $this->log_write("Connected to mx host ".$host."\n");
             return TRUE;
         }
         $this->log_write("Error: Cannot connect to any mx hosts (".implode(", ", $MXHOSTS).")\n");
         return FALSE;
     } 

     function smtp_message($header, $body)
     {
         fputs($this->sock, $header."\r\n".$body);
         $this->smtp_debug("> ".str_replace("\r\n", "\n"."> ", $header."\n> ".$body."\n> "));
         return TRUE;
     } 

     function smtp_eom()
     {
         fputs($this->sock, "\r\n.\r\n");
         $this->smtp_debug(". [EOM]\n");
         return $this->smtp_ok();
     } 

     function smtp_ok()
     {
         $response = str_replace("\r\n", "", fgets($this->sock, 512));
         $this->smtp_debug($response."\n");
         if (!ereg("^[23]", $response))
         {
             fputs($this->sock, "QUIT\r\n");
             fgets($this->sock, 512);
             $this->log_write("Error: Remote host returned \"".$response."\"\n");
             return FALSE;
         }
         return TRUE;
     } 

     function smtp_putcmd($cmd, $arg = "")
     {
         if ($arg != "")
         {
             if($cmd=="")
             {
                 $cmd = $arg;
             }
             else
             {
                 $cmd = $cmd." ".$arg;
             }
         }
         fputs($this->sock, $cmd."\r\n");
         $this->smtp_debug("> ".$cmd."\n");
         return $this->smtp_ok();
     } 

     function smtp_error($string)
     {
         $this->log_write("Error: Error occurred while ".$string.".\n");
         return FALSE;
     } 

     function log_write($message)
     {
         $this->smtp_debug($message);
         if ($this->log_file == "")
         {
             return TRUE;
         }
         $message = date("M d H:i:s ").get_current_user()."[".getmypid()."]: ".$message;
         if (!@file_exists($this->log_file) || !($fp = @fopen($this->log_file, "a")))
         {
             $this->smtp_debug("Warning: Cannot open log file \"".$this->log_file."\"\n");
             return FALSE;;
         }
         flock($fp, LOCK_EX);
         fputs($fp, $message);
         fclose($fp);
         return TRUE;
     } 

     function strip_comment($address)
     {
         $comment = "\([^()]*\)";
         while (ereg($comment, $address))
         {
             $address = ereg_replace($comment, "", $address);
         }
         return $address;
     } 

     function get_address($address)
     {
         $address = ereg_replace("([ \t\r\n])+", "", $address);
         $address = ereg_replace("^.*<(.+)>.*$", "\1", $address);
         return $address;
     } 

     function smtp_debug($message)
     {
         if ($this->debug)
         {
             echo $message;
         }
     } 

 }
 ?>

smtp.php

　　这是已经封装好的类，使用方式如下：

 <?php
   // 引入发送邮件类
   require("smtp.php");
   // 使用qq邮箱服务器
   $smtpserver = "smtp.qq.com";
   // qq邮箱服务器端口
   $smtpserverport = 25;
   // 你的qq服务器邮箱账号
   $smtpusermail = "xxxxxxx@qq.com";
   // 收件人邮箱
   $smtpemailto = "bigbigsunrise@foxmail.com";
   // 你的邮箱账号(去掉@qq.com) SMTP服务器的用户帐号
   $smtpuser = "xxxxxxx";
   // 你的邮箱密码 SMTP服务器的用户密码
   $smtppass = "xxxxxxx"; 

   // 邮件主题
   $mailsubject = "测试邮件发送";
   // 邮件内容
   $mailbody = 'test';
   // 邮件格式（HTML/TXT,TXT为文本邮件
   $mailtype = "TXT";
   // 这里面的一个true是表示使用身份验证,否则不使用身份验证.
   $smtp = new smtp($smtpserver, $smtpserverport, true, $smtpuser, $smtppass);
   // 是否显示发送的调试信息
   $smtp->debug = TRUE;
   //发送邮件
   $smtp->sendmail($smtpemailto, $smtpusermail, $mailsubject, $mailbody, $mailtype);
 ?>

index.php

　　将index.php里的一些参数配置好，然后在浏览器打开index.php，就能自动发送邮件了。

如何批量发送邮件？

• 用户脚本

　　可以直接写个运行在index.php上的用户脚本，定时刷新。

• ajax

　　写个index.html页面，里面发送ajax请求。

　　$.ajax():

for(var i = 0; i < 3; i++) {
  $.ajax({
    type: 'POST',
    url: 'http://localhost/index.php',
    // dataType: '',
    async: true,  // 异步，一起发送 如果false 则一个一个来
    data: {content:'test'},
    success: function(msg) {
      // alert(msg);
    }
  });
}

　　 $.post():

for(var i = 0; i < 3; i++) {
  $.post(
    'http://localhost/index.php',
    {
    'content': 'test'
    },
    function(data, status) {
      // console.log(data);
    }
  );
}

　　如果index.php里要用post或者get发送的参数（键值对），可以用$_POST['content']或者$_GET['content']实现。

　　这里有个很奇怪的地方，如果用post方法，要实现多次发送，必须要带key/value的键值对，而内容则无要求；而如果要用get方法，不仅要带key/value键值对，而且每次需带不同的，如下:

var a = ['test1', 'test2', 'test3', 'test4', 'test5'];
for(var i = 0; i < 3; i++) {
  $.get(
    'http://localhost/index.php',
    {
    // 'content': 'test' // 不行
    'content': a[i]
    },
    function(data, status) {
      // console.log(data);
    }
  );
}

　　我觉得应该是我对get和post区别不了解的原因。

　　ps：原来我想直接在index.php里写个for循环，不知道为何不行。

get和post

　　demo：

　　ajax部分：

$.get(
  'http://127.0.0.1/ajax/index.php',
  function(data, status) {
    console.log(data);
  }
);

　　php部分：

<?php
  function randomFloat() {
    return  mt_rand() / mt_getrandmax();
  }
  echo randomFloat();
?>

• HTTP 方法：GET 对比 POST
• jQuery - AJAX get() 和 post() 方法