/**
* @return string
* @throws Exception
*/
public static function toJson()
{
$array = Export::data();
if (count($array) == 0) {
throw new Exception("Array cannot be empty");
}
// disable caching
$filename = "data_" . date('d-m-Y') . ".json";
$now = gmdate("D, d M Y H:i:s");
Export::headers($filename, $now);
ob_start();
$response = array();
$response["users"] = $array;
$fp = fopen("php://output", 'w');
fwrite($fp, json_encode($response));
fclose($fp);
return ob_get_clean();
}
