SpaceofWeb

$url = "https://yourFile.pdf";
$content = file_get_contents($url);

header('Content-Type: application/pdf');
header('Content-Length: ' . strlen($content));
header('Content-Disposition: inline; filename="YourFileName.pdf"');
header('Cache-Control: private, max-age=0, must-revalidate');
header('Pragma: public');
ini_set('zlib.output_compression','0');