How to Add IF ELSE Condition Between Laravel Query

I Want To Add if Else Condtion Between Query. If Distance is Not Equal To 0 Then Execute Query With Having Condition......... Else Remove Having Conition

I Want Like This. As Shown Below. But Got Error. Please Suggest Me How Can I do This ? Below Code Is Not Working.

        $data = DB::table('tbl_jobs')
                ->select(array("*",
                    DB::raw("(6371 * acos(cos(radians($location->latitude)) * cos(radians(users.latitude)) * cos(radians(users.longitude) - radians($location->longitude)) + sin(radians($location->latitude)) * sin(radians(users.latitude))))as distance"),
                    DB::raw("IFNULL((select CASE WHEN id IS NULL THEN 0 ELSE 1 END from tbl_users_apply_job where user_id = $user_id and job_id = tbl_jobs.job_id),0)as applied_by_me"))
                )
                ->join('users', 'tbl_jobs.job_added_by', '=', 'users.id')
                ->join('tbl_company', 'users.id', '=', 'tbl_company.company_owner_id')
		if($distance != "0"){
                   $data->having("distance", "<=", $distance);
		}
                ->get();