<?php
foreach ($_POST as $key => $value) {
    setcookie('pdf_' . $key, $value, time() - (86400 * 30));
    $param .= "$key=$value&";
}
//print_r($_COOKIE);
//$json['url'] = 'pdf/special_government/' . $param . '/';
$json['url'] = 'excel/disciplinary-action-monthin/' . $param . '/';
echo json_encode($json);