<?php
function downloadFile($file){  
    $file_name = $file;  
    $mime = 'application/force-download';  
    header('Pragma: public'); // required  
    header('Expires: 0'); // no cache  
    header('Cache-Control: must-revalidate, post-check=0, pre-check=0');  
    header('Cache-Control: private',false);  
    header('Content-Type: '.$mime);  
    header('Content-Disposition: attachment; filename="'.basename($file_name).'"');  
    header('Content-Transfer-Encoding: binary');  
    header('Connection: close');  
    readfile($file_name); // push it out  
    exit();  
}  
?>

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