public function exist($args, $compare = null)
{
$row = instance::one($this->read(), "select * from %t where " . instance::implode($args, 'AND'), [$this->table()]);
if (empty($row)) {
return false;
} else {
if (!$compare) {
return true;
} else {
foreach ($compare as $k => $v) {
if ($row[$k] != $v) {
return true;
}
}
return false;
}
}
}