public static function deleteUser($userid)
{
$dbh = Database::getDbh();
$sql = "delete from sysuser where userid = ? ";
$stmt = $dbh->prepare($sql) or die;
$stmt->bindParam(1, $userid, PDO::PARAM_INT);
$stmt->execute();
$result = $stmt->rowCount();
$dbh = null;
return $result;
}
