php Code example of download file , Friends in need can refer to
$file = 'monkey.gif';  if (file_exists($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)); 

The above code is the download code .
The online preview pdf File code :
*  The online preview pdf file
* edit by
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"'); 
die(); // stop execution of further script because we are only outputting the pdf  } else { 
die('Error: File not found.'); 


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