二维数级差集

$A = [
            ["sbnumber" => "0513-0001-00001", "name" => "心安苑"],
            ["sbnumber" => "0513-0001-00002", "name" => "中正苑"],
            ["sbnumber" => "0513-0001-00003", "name" => "务实苑"],
            ["sbnumber" => "0513-0001-00004", "name" => "服务苑"],
            ["sbnumber" => "0513-0001-00007", "name" => "李四7"]
        ];
        $B = [
            ["sbnumber" => "0513-0001-00001", "name" => "心安苑"],
            ["sbnumber" => "0513-0001-00002", "name" => "中正苑"],
            ["sbnumber" => "0513-0001-00003", "name" => "务实苑"],
            ["sbnumber" => "0513-0001-00004", "name" => "服务苑"],
            ["sbnumber" => "0513-0001-00007", "name" => "李四"]
        ];

        $C = array();
        foreach($A as $a){
            $Ck = $a['sbnumber'].'#'.$a['name'];
            $C[$Ck] = 1;
        }

        $D = array();
        foreach($B as $b){
            $Dk = $b['sbnumber'].'#'.$b['name'];
            $D[$Dk] = 1;
        }
        /*
         * A - B
         */

        $A_B = array();
        foreach($C as $key => $val){
            if(isset($D[$key])&&$D[$key]==1){

            }else{
                $A_B[] = explode('#', $key);
            }
        }


        echo '<br/>';
        /*
         * B-A
         */
        $B_A = array();
        foreach($D as $key=>$val){
            if(isset($C[$key])&&$C[$key]==1){

            }else{
                $B_A[] = explode('#', $key);
            }
        }
        dump($B_A);