XetaIO / Xetaravel

        );

        $devicesGraph = [];

        for ($i = 0; $i < 8; $i++) {

            $date = Carbon::now()->subMonths($i);

            $devicesGraph[$date->format('Ym')] = [

                'period' => $date->format('Y-m-d'),

                'Apple' => 0,

                'Samsung' => 0,

                'Google' => 0,

                'HTC' => 0,

                'Microsoft' => 0

            ];

        }

        foreach ($devicesData->rows as $device) {

            $devicesGraph[$device[1]][$device[0]] = $device[2];

        );

        $operatingSystemGraph = [];

        for ($i = 0; $i < 8; $i++) {

            $date = Carbon::now()->subMonths($i);

            $operatingSystemGraph[$date->format('Ym')] = [

                'period' => $date->format('Y-m-d'),

                'Windows' => 0,

                'Macintosh' => 0,

                'Linux' => 0,

                '(not set)' => 0

            ];

        }

        foreach ($operatingSystemData->rows as $os) {

            $operatingSystemGraph[$os[1]][$os[0]] = $os[2];