$test = [
        [
            "id" => "",
            "demand_id" => null,
            "corp_id" => 168221,
            "push_time" => "2018-07-19 11:45",
            "push_flg" => 0,
            "before_push_flg" => 0,
            "display_flg" => 0,
            "refusal_flg" => 0,
            "rank" => "z",
            "auto_call_time" => null,
            "auto_call_flg" => null,
            "affiliationAreaStat" =>[
                "commission_unit_price_category" => null,
                "commission_count_category" => 0,
                "commission_unit_price_rank" => "z",
            ],
            "mCorpCategory" => [
                "order_fee" => 30,
                "order_fee_unit" => 1,
                "introduce_fee" => null,
                "corp_commission_type" => 1,
            ],
            "mCorp" => [
                "id" => 168221,
            ]
        ],
        [
            "id" => "",
            "demand_id" => null,
            "corp_id" => 167611,
            "push_time" => "2018-07-19 11:45",
            "push_flg" => 0,
            "before_push_flg" => 0,
            "display_flg" => 0,
            "refusal_flg" => 0,
            "rank" => "z",
            "auto_call_time" => null,
            "auto_call_flg" => null,
            "affiliationAreaStat" => [
                "commission_unit_price_category" => null,
                "commission_count_category" => 0,
                "commission_unit_price_rank" => "z",
            ],
            "mCorpCategory" => [
                "order_fee" => 30,
                "order_fee_unit" => 1,
                "introduce_fee" => null,
                "corp_commission_type" => 1,
            ],
            "mCorp" => [
                "id" => 167611,
            ]
        ]
    ];

        uasort($test, function($a, $b){
            if($a['push_time'] != $b['push_time']){
                // AuctionInfo.push_time asc
                return $a['push_time'] < $b['push_time'] ? -1 : 1;
            }else if($a['affiliationAreaStat']['commission_unit_price_category'] != $b['affiliationAreaStat']['commission_unit_price_category']){
                // affiliationAreaStat.commission_unit_price_category IS NULL
                if(empty($a['affiliationAreaStat']['commission_unit_price_category']) && !empty($b['affiliationAreaStat']['commission_unit_price_category']))
                    return 1;
                else if(!empty($a['affiliationAreaStat']['commission_unit_price_category']) && empty($b['affiliationAreaStat']['commission_unit_price_category']))
                    return -1;
                else
                    // affiliationAreaStat.commission_unit_price_category desc
                    return $a['affiliationAreaStat']['commission_unit_price_category'] > $b['affiliationAreaStat']['commission_unit_price_category'] ? -1 : 1;
            }else if($a['affiliationAreaStat']['commission_count_category'] != $b['affiliationAreaStat']['commission_count_category']){
                // affiliationAreaStat.commission_count_category desc
                return $a['affiliationAreaStat']['commission_count_category'] > $b['affiliationAreaStat']['commission_count_category'] ? -1 : 1;
            }else{
                return 0;
            }
        });
        var_dump($test);
        die;