php实现的发送带附件邮件类实例

本文实例讲述了php实现的发送带附件邮件类的方法，是一个非常实用的功能。分享给大家供大家参考。具体方法如下：

emailclass.php类文件如下：

    <? 
    class CMailFile {  

      var $subject;  
      var $addr_to;  
      var $text_body;  
      var $text_encoded;  
      var $mime_headers;  
      var $mime_boundary = "--==================_846811060==_";  
      var $smtp_headers;  

      function CMailFile($subject,$to,$from,$msg,$filename,$downfilename,$mimetype = "application/octet-stream",$mime_filename = false) {  
        $this->subject = $subject;     
        $this->addr_to = $to;     
        $this->smtp_headers = $this->write_smtpheaders($from); 
        $this->text_body = $this->write_body($msg); 
        $this->text_encoded = $this->attach_file($filename,$downfilename,$mimetype,$mime_filename); 
        $this->mime_headers = $this->write_mimeheaders($filename, $mime_filename); 
      }  

      function attach_file($filename,$downfilename,$mimetype,$mime_filename) { 
        $encoded = $this->encode_file($filename); 
        if ($mime_filename) $filename = $mime_filename; 
        $out = "--" . $this->mime_boundary . "\n"; 
        $out = $out . "Content-type: " . $mimetype . "; name=\"$filename\";\n"; 
        $out = $out . "Content-Transfer-Encoding: base64\n"; 
        $out = $out . "Content-disposition: attachment; filename=\"$downfilename\"\n\n"; 
        $out = $out . $encoded . "\n"; 
        $out = $out . "--" . $this->mime_boundary . "--" . "\n"; 
        return $out; 
      }  

      function encode_file($sourcefile) {  
        if (is_readable($sourcefile)) {  
          $fd = fopen($sourcefile, "r");  
          $contents = fread($fd, filesize($sourcefile));  
          $encoded = chunk_split(base64_encode($contents));  
          fclose($fd);  
        }  
        return $encoded;  
      }  

      function sendfile() {   
        $headers = $this->smtp_headers . $this->mime_headers;  
        $message = $this->text_body . $this->text_encoded;  
        mail($this->addr_to,$this->subject,$message,$headers);  
      }  

      function write_body($msgtext) {  
        $out = "--" . $this->mime_boundary . "\n";  
        $out = $out . "Content-Type: text/plain; charset=\"us-ascii\"\n\n";  
        $out = $out . $msgtext . "\n";  
        return $out;  
      }  

      function write_mimeheaders($filename, $mime_filename) {  
        if ($mime_filename) $filename = $mime_filename;  
        $out = "MIME-version: 1.0\n";  
        $out = $out . "Content-type: multipart/mixed; ";  
        $out = $out . "boundary=\"$this->mime_boundary\"\n";  
        $out = $out . "Content-transfer-encoding: 7BIT\n";  
        $out = $out . "X-attachments: $filename;\n\n";  
        return $out;  
      }  

      function write_smtpheaders($addr_from) {  
        $out = "From: $addr_from\n";  
        $out = $out . "Reply-To: $addr_from\n";  
        $out = $out . "X-Mailer: PHP3\n";  
        $out = $out . "X-Sender: $addr_from\n";  
        return $out;  
      }  
    }  

    /*用法 - 例如:mimetype 为 "image/gif" 
      $mailfile = new CMailFile($subject,$sendto,$replyto,$message,$filename,$mimetype); 
      $mailfile->sendfile(); 

      $subject -- 主题 
      $sendto -- 收信人地址 
      $replyto -- 回复地址 
      $message -- 信件内容 
      $filename -- 附件文件名 
      $downfilename -- 下�的文件名 
      $mimetype -- mime类型 
    */ 
    ?> 

Demo示例文件如下：

    <?php 
      require_once('emailclass.php'); 

      //发送邮件 

      //主� 
      $subject = "test send email"; 

      //收件人 
      $sendto = 'abc@163.com'; 

      //�件人 
      $replyto = 'cdf@163.com'; 

      //�容 
      $message = "test send email content"; 

      //附件 
      $filename = 'test.jpg'; 

      //附件�� 
      $mimetype = "image/jpeg"; 

      $mailfile = new CMailFile($subject,$sendto,$replyto,$message,$filename,$excelname,$mimetype);  
      $mailfile->sendfile(); 
    ?>

相信本文所述对大家php程序设计的学习有一定的借鉴价值。