Answer by Mohammad Ali Abdullah for Laravel Eloquent "WHERE NOT IN"

$created_po = array();     $challan = modelname::where('fieldname','!=', 0)->get();     // dd($challan);     foreach ($challan as $rec){         $created_po[] = array_push($created_po,$rec->fieldname);     }     $data = modelname::whereNotIn('fieldname',$created_po)->orderBy('fieldname','desc')->with('modelfunction')->get();