public function where($column, $value = '')
{
if (is_array($column)) {
foreach ($column as $key => $val) {
$this->whereNeedAddAndOrOr > 0 && ($value === false ? $this->_or() : $this->_and());
$this->conditionFactory($key, $val, '=');
}
} else {
$this->conditionFactory($column, $value, '=');
}
return $this;
}