emailclass.php类文件如下：
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 -- 下載的文件名 $mimetype -- mime类型 */ ?>
demo示例文件如下：
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。