private static function excel() { $collection = self::post('collection'); $name = 'filtros_reportes' . rand(1000000, 9000000); $excel = new Excel(); $excel->setName($name); $excel->setProp(array('title' => "filtros")); $excel->setFiltrosFormat($collection); $excel->create(); $dir = $excel->getDir(); if (file_exists($dir . "/" . $name . ".xlsx")) { echo $name . ".xlsx"; } else { echo "false"; } }