多维数组.....嵌套下拉菜单？

-1

Array 
(
[0] => Array 
    (
     [id] => 1 
     [parent] => 0 
     [title] => Parent 1 
     [children] => Array 
      (
       [0] => Array 
        (
         [id] => 2 
         [parent] => 1 
         [title] => Child 1 
         [children] => Array 
          (
           [0] => Array 
            (
             [id] => 3 
             [parent] => 2 
             [title] => child 2 
             [children] => Array 
              (
              ) 

            ) 

          ) 

        ) 

       [1] => Array 
        (
         [id] => 9 
         [parent] => 1 
         [title] => parent of one 
         [children] => Array 
          (
          ) 

        ) 

       [2] => Array 
        (
         [id] => 19 
         [parent] => 1 
         [title] => df 
         [children] => Array 
          (
          ) 

        ) 

      ) 

    ) 

[1] => Array 
    (
     [id] => 4 
     [parent] => 0 
     [title] => parent 2 
     [children] => Array 
      (
       [0] => Array 
        (
         [id] => 5 
         [parent] => 4 
         [title] => child 4 
         [children] => Array 
          (
           [0] => Array 
            (
             [id] => 6 
             [parent] => 5 
             [title] => child 5 
             [children] => Array 
              (
               [0] => Array 
                (
                 [id] => 7 
                 [parent] => 6 
                 [title] => child 7 
                 [children] => Array 
                  (
                  ) 

                ) 

               [1] => Array 
                (
                 [id] => 8 
                 [parent] => 6 
                 [title] => child 8 
                 [children] => Array 
                  (
                   [0] => Array 
                    (
                     [id] => 12 
                     [parent] => 8 
                     [title] => child 9 
                     [children] => Array 
                      (
                      ) 

                    ) 

                  ) 

                ) 

              ) 

            ) 

           [1] => Array 
            (
             [id] => 17 
             [parent] => 5 
             [title] => child unknown 
             [children] => Array 
              (
               [0] => Array 
                (
                 [id] => 18 
                 [parent] => 17 
                 [title] => asdasd 
                 [children] => Array 
                  (
                  ) 

                ) 

              ) 

            ) 

          ) 

        ) 

      ) 

    ) 

[2] => Array 
    (
     [id] => 13 
     [parent] => 0 
     [title] => parent 3 
     [children] => Array 
      (
      ) 

    ) 

[3] => Array 
    (
     [id] => 14 
     [parent] => 0 
     [title] => parent 4 
     [children] => Array 
      (
       [0] => Array 
        (
         [id] => 21 
         [parent] => 14 
         [title] => sad 
         [children] => Array 
          (
           [0] => Array 
            (
             [id] => 22 
             [parent] => 21 
             [title] => sdfsaf 
             [children] => Array 
              (
               [0] => Array 
                (
                 [id] => 23 
                 [parent] => 22 
                 [title] => test 
                 [children] => Array 
                  (
                   [0] => Array 
                    (
                     [id] => 24 
                     [parent] => 23 
                     [title] => tester 
                     [children] => Array 
                      (
                       [0] => Array 
                        (
                         [id] => 25 
                         [parent] => 24 
                         [title] => tested 
                         [children] => Array 
                          (
                           [0] => Array 
                            (
                             [id] => 26 
                             [parent] => 25 
                             [title] => example 
                             [children] => Array 
                              (
                               [0] => Array 
                                (
                                 [id] => 27 
                                 [parent] => 26 
                                 [title] => examples 
                                 [children] => Array 
                                  (
                                  ) 

                                ) 

                              ) 

                            ) 

                          ) 

                        ) 

                      ) 

                    ) 

                  ) 

                ) 

              ) 

            ) 

          ) 

        ) 

      ) 

    ) 

[4] => Array 
    (
     [id] => 15 
     [parent] => 0 
     [title] => parent 5 
     [children] => Array 
      (
      ) 

    ) 

[5] => Array 
    (
     [id] => 16 
     [parent] => 0 
     [title] => parent 6 
     [children] => Array 
      (
      ) 

    ) 

[6] => Array 
    (
     [id] => 20 
     [parent] => 0 
     [title] => aaa 
     [children] => Array 
      (
      ) 

    ) 

)

关于如何使这个数组嵌套下拉的任何建议？多维数组.....嵌套下拉菜单？

我不知道从哪里开始.....

来源

2013-02-25 Dikshant Ghimire

使用'for'或'foreach'循环。 :) – 2013-02-25 05:26:36

@YogeshSuthar使用foreach（）循环后，我需要一个递归函数来显示它们在下拉列表中。 – 2013-02-25 06:47:19

在foreach里面写foreach。 – 2013-02-25 06:54:25

$HOST="localhost"; 
$DB="db_dir"; 
$USER="root"; 
$PASS=""; 

mysql_connect($HOST,$USER,$PASS); 
mysql_select_db($DB); 

function RecursiveCat($pid) 
{ 
static $level=0; 
static $strid=""; 
static $strname=""; 

$sql=mysql_query("select * from categories where cat_parent =".$pid." "); 
//var_dump($sql); 

while($row=mysql_fetch_assoc($sql)) 
{ 
    $id=$row['cat_id']; 
    $level--; 
    $pad=""; 

    for($p=1;$p<($level*-1);$p++) $pad.="&nbsp;&nbsp;&nbsp;> "; 

    $strname.='<option value="'.$row['cat_id'].'">'.$pad.$row['cat_title'].'</option>'; 

    $rid=RecursiveCat($id); 
    $strid[]=$row['cat_id']; 
    $level++; 
} 

return $strname; 
} 

<?php echo '<select name="parent">'.'<option value="0">None</option>'; 
echo RecursiveCat(0);echo '</select>';?>

来源

2013-02-26 07:57:50

多维数组.....嵌套下拉菜单？

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