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====== Structure Top-Down Output ======

**A snippet catching all available cat-ids behind the given parent id.**

  * Input: Parent category ID
  * Output: All available category IDs behind the given id in a string comma separated (Without hidden categories).

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<del>**Version 1.0**</del>  Don´t use it anymore!!
<code php |h StructureTopDown_v1.0 |h>
function buildStruct_TopDown($start=0) {
	
	static $my_cat_id = '';
	
	$struct = getStructureChildData($start); // child data available? 
	
	foreach($struct as $value) {

		buildStruct_TopDown($value['acat_id']);
		$my_cat_id .= $my_cat_id != '' ? ','.$value['acat_id'] : $value['acat_id'];
		
//		echo  '||'.$value['acat_id'].' ,';
		
	}

return $my_cat_id;
}
</code>
 
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**Version 1.1** The right one!! //(Update: KH 25.01.2011)//

<code php |h StructureTopDown_v1.1 |h>
function buildStruct_TopDown($start=0, &$my_cat_id='') { / KH: V1.1 25.01.2011

    $struct = getStructureChildData($start);

    foreach($struct as $value) {
 
//        buildStruct_TopDown($value['acat_id'],$my_cat_id);
        $my_cat_id .= ($my_cat_id != '') ? ','.$value['acat_id'] : $value['acat_id'];
        buildStruct_TopDown($value['acat_id'],$my_cat_id);
 
//        echo  '||'.$value['acat_id'].' ,';
 
    }
 
return $my_cat_id;
}
</code>

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==== Example: ====
 
Given structure
<file>
------------------------------------
L  E  V  E  L
.:  :  :  :
.0  1  2  3   <- LEVEL-Nr.
.:  :  :  :
-+ home   :                    ID=0
-+--+ category_01              ID=01
-+--+ category_02              ID=02
-+--+--+ category_02_01        ID=04
-+--+--+--+ category_02_01_01  ID=06
-+--+--+--+ category_02_01_02  ID=07
-+--+--+ category_02_01        ID=05
-+--+--+ category_02_02        ID=08
-+--+ category_03              ID=03
-+--+ category_04              ID=09
.:  :  :  :
.0  1  2  3   <- LEVEL Nr.
------------------------------------
</file>

function call: ##$s = buildStruct_TopDown(2);##  //category_02 -> ID=02//

Output ##$s##: **4,6,7,5,8**

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===== Number of sub-levels =====

Number of categories of the next level when available.

<code php>
echo count(getStructureChildData($GLOBALS['content']['cat_id']));
</code>

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==== Is there a sub-level? ====

Simple Script to determine whether there is below the current level, a sub-level.

<code php>
// Sub-Level available?

if (!count(getStructureChildData($GLOBALS['content']['cat_id'])))
   echo 'No Sub-level!';
else 
   echo 'Sub-level available!';

</code>

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