文件下载强制保存，不直接打开，php响应头

header('Content-Description: File Transfer');

header('Cache-Control: private, must-revalidate, 
post-check=0, pre-check=0, max-age=1');

//header('Cache-Control: public, must-revalidate, max-age=0'); // HTTP/1.1

header('Pragma: public');

header('Expires: Sat, 26 Jul 1997 05:00:00 GMT'); // Date in the past

header('Last-Modified: '.gmdate('D, d M Y H:i:s').' GMT');

// force download dialog

if (strpos(php_sapi_name(), 'cgi') === false) {

	header('Content-Type: application/force-download');

	header('Content-Type: application/octet-stream', false);

	header('Content-Type: application/download', false);

	header('Content-Type: application/pdf', false);

} else {

	header('Content-Type: application/pdf');

}

// use the Content-Disposition header to supply a recommended filename

header('Content-Disposition: attachment; filename="'.basename($name).'";');

header('Content-Transfer-Encoding: binary');



----- 如果有插件支持， 则在浏览器直接打开的php响应头 -----

header('Content-Type: application/pdf');

header('Cache-Control: private, must-revalidate, 
post-check=0, pre-check=0, max-age=1');

//header('Cache-Control: public, must-revalidate, max-age=0'); // HTTP/1.1

header('Pragma: public');

header('Expires: Sat, 26 Jul 1997 05:00:00 GMT'); // Date in the past

header('Last-Modified: '.gmdate('D, d M Y H:i:s').' GMT');

header('Content-Disposition: inline; filename="'.basename($name).'";');