文章介紹了利用php來實現讀取文件并且下載的代碼,php要下載文件必須用到header函數,大家可參考一下,代碼如下:
- <?php
- $file = 'monkey.gif';
- if (file_exists($file)) {
- header('Content-Description: File Transfer');
- header('Content-Type: application/octet-stream');
- header('Content-Disposition: attachment; filename='.basename($file));
- header('Content-Transfer-Encoding: binary');
- header('Expires: 0');
- header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
- header('Pragma: public');
- header('Content-Length: ' . filesize($file));
- ob_clean();
- flush();
- readfile($file);
- exit;
- }
- ?>
以上代碼是下載代碼,接下來貼一段在線預覽pdf文件的代碼:
- <?php
- public function fddAction()
- {
- // get attachment location
- $attachment_location = $_SERVER["DOCUMENT_ROOT"] . "/pdf/fdd/sample.pdf";
- if (file_exists($attachment_location)) {
- // attachment exists
- // send open pdf dialog to user
- header('Cache-Control: public'); // needed for i.e.
- header('Content-Type: application/pdf');
- header('Content-Disposition: inline; filename="sample.pdf"');
- readfile($attachment_location);
- die(); // stop execution of further script because we are only outputting the pdf
- } else {
- die('Error: File not found.');
- }
- }
- ?>
新聞熱點
疑難解答