gistfile1.php

### Function: Add Download Query Vars
add_filter('query_vars', 'cbreport_query_vars');
function cbreport_query_vars($public_query_vars) {
    $public_query_vars[] = "report_ids";
	
	return $public_query_vars;
}


add_action('template_redirect', 'reportdownload_file', 5);
function reportdownload_file() {
    global $wpdb;
	$report_ids = intval(get_query_var('report_ids'));
    //slit with comman
    
    //query posts, 
    
    //for each post
    
    //get meta for the pdf file url
    
    //so now we are in loop
    // required for IE, otherwise Content-disposition is ignored
                                    if(ini_get('zlib.output_compression')){
                                        ini_set('zlib.output_compression', 'Off');
                                    }
                                    header($_SERVER['SERVER_PROTOCOL'].' 200 OK'); //added by me
                                    header("Pragma: public");
                                    header("Expires: 0");
                                    header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
                                    header("Content-Type: application/force-download");
                                    header("Content-Type: application/octet-stream");
                                    header("Content-Description: File Transfer");
                                    header("Content-Type: application/download");
                                    header("Content-Disposition: attachment; filename=".basename($file_name).";");
                                    header("Content-Transfer-Encoding: binary");
                                    header("Content-Length: ".filesize($file_path.$file_name));                                 
                                    ob_clean();
                                    flush();
                                    readfile($file_path.$file_name);
}