php二维数组的合并2种方法

Array (

          [0] => Array (

                              [A] => store_name

                              [B] => 商店一

                             )

          [1] => Array (

                              [A] => store_owner

                              [B] => 小风

                              )

          [2] => Array (

                              [A] => store_name

                              [B] => 商店二

                              )

          [3] => Array (

                               [A] => store_owner

                               [B] => 小磊

                               )

?>

大家会发现里面有两个 store_name 和 store_owner ,所以我想让他们合并成下面这样

Array (

     [0] => Array

         (

           [A] => 商店一

           [B] => 小风

          )

      [1] => Array

         (

           [A] => 商店二

           [B] => 小磊

          )

?>

$stores = array(); //定义一个空数组
        $store_count=count($showinfo);  //统计显示的次数，这里的$showinfo是我获取数据库内容时的一个变量，然后打印出来就是上面刚开始的样子
        for($i=0;$i<$store_count;$i++)
        {
            $j=$i+1;     //将 $i 加 1 跳过 一级  相当于 $j 取得是 键值为 奇数的值
            $stores[]=array(
                          'name' =>$showinfo[$i]['value'],
                          'owner'=>$showinfo[$j]['value'],
                          );
            $i = $j;  //  这里的作用是 相当于 $i 取得是 键值为 偶数的值
        }

?>

$arr = array
(
    0 => array(
    '1@01,02',
    '2@01,02',
    '4@ALL',
    '3@01',
    '5@01,02,04',
    ),

    1 => array(
    '1@01,02,03',
    '2@01,02,04',
    '3@ALL',
    '4@01,02',
    '111@01,05',
    '5@03',
    ),
    2 => array(
    '1@01,02,03',
    '2@02,03,05',
    '3@ALL',
    '4@01,02,03',
    '111@01,05',
    '5@03',
    ),
);
$result = array();
foreach($arr as $items){
    if(is_array($items)){
        foreach($items as $item){
            $item = explode('@', $item);
            if(count($item) != 2){
                continue ;
            }
            $result[$item[0]] .= $item[1].',';
        }
    }
}
function reJoin(&$item,$key,$seq){
    $list = array_unique(explode($seq,$item));
    if (in_array('ALL', $list)){
        $item = $key.'@ALL';
    }else{
        $item = $key.'@'.join($seq,$list);
    }
}
array_walk($result, 'reJoin',',');
sort($result);
var_export($result);
/**
 * array (
  * 0 => '111@01,05,',
  * 1 => '1@01,02,03,',
  * 2 => '2@01,02,04,03,05,',
  * 3 => '3@ALL',
  * 4 => '4@ALL',
  * 5 => '5@01,02,04,03,',
  * )
 */
?>