簡介
在處理涉及文件傳輸的電子郵件通信時,您偶爾可能會通信時,您偶爾可能會通信遇到以下情況:需要附加多個文件,而不僅僅是一個文件。 PHP 提供了一個強大的平台來處理此類電子郵件操作。
了解原始程式碼
您提供的原始程式碼成功發送了單一檔案附件。但是,要附加多個文件,需要進行某些修改。
解決方案:多個文件附件的增強
下面改進的程式碼可以將多個文件作為附件發送:
<code class="php"><form action="#" method="POST" enctype="multipart/form-data" > <input type="file" name="csv_file[]" /> <br/> <input type="file" name="csv_file[]" /> <br/> <input type="file" name="csv_file[]" /> <br/> <input type="submit" name="upload" value="Upload" /> <br/> </form> <?php if ($_POST) { $csv_files = array(); $files = array(); for ($i=0; $i < count($_FILES['csv_file']['name']); $i++){ $csv_files[] = $_FILES['csv_file']['name'][$i]; } // array with filenames to be sent as attachments $files = $csv_files; // email fields: to, from, subject, and so on $to = "[email protected]"; $from = "[email protected]"; $subject = "My subject"; $message = "My message"; $headers = "From: $from"; // boundary $semi_rand = md5(time()); $mime_boundary = "==Multipart_Boundary_x{$semi_rand}x"; // headers for attachment $headers .= "\nMIME-Version: 1.0\n" . "Content-Type: multipart/mixed;\n" . " boundary=\"{$mime_boundary}\""; // multipart boundary $message = "This is a multi-part message in MIME format.\n\n" . "--{$mime_boundary}\n" . "Content-Type: text/plain; charset=\"iso-8859-1\"\n" . "Content-Transfer-Encoding: 7bit\n\n" . $message . "\n\n"; $message .= "--{$mime_boundary}\n"; // preparing attachments for($x=0;$x<count($files);$x++){ $file = fopen($files[$x],"rb"); $data = fread($file,filesize($files[$x])); fclose($file); $data = chunk_split(base64_encode($data)); $message .= "Content-Type: {\"application/octet-stream\"};\n" . " name=\"$files[$x]\"\n" . "Content-Disposition: attachment;\n" . " filename=\"$files[$x]\"\n" . "Content-Transfer-Encoding: base64\n\n" . $data . "\n\n"; $message .= "--{$mime_boundary}\n"; } // send $ok = @mail($to, $subject, $message, $headers); if ($ok) { echo "<p>mail sent to $to!</p>"; } else { echo "<p>mail could not be sent!</p>"; } } ?></code>
說明:
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