Multidimensional array..... nested dropdown? - php

Question

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
(
)
)
)
any suggestions on how to make a nested dropdown out of this array ?
i have no idea where to start.....

Answer 1

$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.=" > ";
$strname.='<option value="'.$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>';?>