PHP: Download File


<?php
function downloadFile($fullPath){
// Must be fresh start
if (headers_sent())
die(‘Headers Sent’);

// Required for some browsers
if (ini_get(‘zlib.output_compression’))
ini_set(‘zlib.output_compression’, ‘Off’);

// File Exists?
if(file_exists($fullPath)){
// Parse Info / Get Extension
$fsize         = filesize($fullPath);
$path_parts = pathinfo($fullPath);
$ext         = strtolower($path_parts[“extension”]);

// Determine Content Type
switch ($ext) {
case “pdf”: $ctype=”application/pdf”; break;
case “exe”: $ctype=”application/octet-stream”; break;
case “zip”: $ctype=”application/zip”; break;
case “doc”: $ctype=”application/msword”; break;
case “xls”: $ctype=”application/vnd.ms-excel”; break;
case “ppt”: $ctype=”application/vnd.ms-powerpoint”; break;
case “gif”: $ctype=”image/gif”; break;
case “png”: $ctype=”image/png”; break;
case “jpeg”:
case “jpg”: $ctype=”image/jpg”; break;
default: $ctype=”application/force-download”;
}

header(“Pragma: public”); // required
header(“Expires: 0”);
header(“Cache-Control: must-revalidate, post-check=0, pre-check=0”);
header(“Cache-Control: private”,false); // required for certain browsers
header(“Content-Type: $ctype”);
header(“Content-Disposition: attachment; filename=\”” . basename($fullPath) . “\”;” );
header(“Content-Transfer-Encoding: binary”);
header(“Content-Length: ” . $fsize);
ob_clean();
flush();
readfile($fullPath);
} else {
die(‘File Not Found’);
}
}
?>

source:

http://www.php.net/manual/en/function.header.php

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