PHP Forceful download - 2 Different codes

A force-download script can give you more control over a file download than you would have providing a direct link. Using a force-download script, you can:

• Validate that a person is logged in
• Increment a counter in a text file
• Connect to your database and log IP information, increment a counter, and record who downloaded the file.

The Code

// grab the requested file's name

$file_name = $_GET['file'];



// make sure it's a file before doing anything!

if(is_file($file_name))

{



	/*

		Do any processing you'd like here:

		1.  Increment a counter

		2.  Do something with the DB

		3.  Check user permissions

		4.  Anything you want!

	*/



	// required for IE

	if(ini_get('zlib.output_compression')) { ini_set('zlib.output_compression', 'Off');	}



	// get the file mime type using the file extension

	switch(strtolower(substr(strrchr($file_name,'.'),1)))

	{

		case 'pdf': $mime = 'application/pdf'; break;

		case 'zip': $mime = 'application/zip';

break;

		case 'jpeg':

		case 'jpg': $mime = 'image/jpg'; break;

		default: $mime = 'application/force-download';

	}

	header('Pragma: public'); 	// required

	header('Expires: 0');		// no cache

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

	header('Cache-Control: private',false);

	header('Content-Type: '.$mime);

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

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

	header('Content-Length: '.filesize($file_name));	// provide file size

	readfile($file_name);		// push it out

	exit();





===========ANOTHER EXAMPLE====================

< ?php

// force to download a file
$file = "http://localhost/test/" .$_GET['file']." " ;

header(" Pragma: public" );
header(" Expires: 0" );
header(" Cache-Control: must-revalidate, post-check=0, pre-check=0" );

header(" Content-Type: application/force-download" );
header( " Content-Disposition: attachment; filename=" .basename($file));

header( " Content-Description: File Transfer" );
@readfile($file);

?>