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    <p>This is not necessarily a job for recursion, this can be done easily by iteration.</p> <pre><code>&lt;?php $data = array( array('id' =&gt; 1001, 'ParentId' =&gt; NULL, 'Name' =&gt; 'Computing', 'Level' =&gt; 0), array('id' =&gt; 1002, 'ParentId' =&gt; NULL, 'Name' =&gt; 'Cassettes &amp; Vinyl', 'Level' =&gt; 0), array('id' =&gt; 1003, 'ParentId' =&gt; 1001, 'Name' =&gt; 'CD Players', 'Level' =&gt; 1), array('id' =&gt; 1004, 'ParentId' =&gt; 1002, 'Name' =&gt; 'CD Writers', 'Level' =&gt; 1), array('id' =&gt; 1005, 'ParentId' =&gt; 1003, 'Name' =&gt; 'CD-ROM Drives', 'Level' =&gt; 2), array('id' =&gt; 1006, 'ParentId' =&gt; 1004, 'Name' =&gt; 'Computing', 'Level' =&gt; 3) ); $index = array(); $tree = array(); // step 1: build index (note that I use &amp;$row references!) foreach ($data as &amp;$row) { $index[$row['id']] = &amp;$row; $row['children'] = array(); if ($row['ParentId'] == NULL) { $tree[] = &amp;$row; } } // step 2: link tree (references here as well!) foreach ($data as &amp;$row) { $index[$row['ParentId']]['children'][] = &amp;$row; } print_r($tree); ?&gt; </code></pre> <p>result:</p> <pre><code>Array ( [0] =&gt; Array ( [id] =&gt; 1001 [ParentId] =&gt; [Name] =&gt; Computing [Level] =&gt; 0 [children] =&gt; Array ( [0] =&gt; Array ( [id] =&gt; 1003 [ParentId] =&gt; 1001 [Name] =&gt; CD Players [Level] =&gt; 1 [children] =&gt; Array ( [0] =&gt; Array ( [id] =&gt; 1005 [ParentId] =&gt; 1003 [Name] =&gt; CD-ROM Drives [Level] =&gt; 2 [children] =&gt; Array ( ) ) ) ) ) ) [1] =&gt; Array ( [id] =&gt; 1002 [ParentId] =&gt; [Name] =&gt; Cassettes &amp; Vinyl [Level] =&gt; 0 [children] =&gt; Array ( [0] =&gt; Array ( [id] =&gt; 1004 [ParentId] =&gt; 1002 [Name] =&gt; CD Writers [Level] =&gt; 1 [children] =&gt; Array ( [0] =&gt; Array ( [id] =&gt; 1006 [ParentId] =&gt; 1004 [Name] =&gt; Computing [Level] =&gt; 3 [children] =&gt; Array ( ) ) ) ) ) ) ) </code></pre>
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    1. POPHP Create a multi-dimensional object from a flat dataset (from Mysql Table)
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    1. USTomalak
    1. USTomalak
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
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      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
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      1. This table or related slice is empty.
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    3. VO
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      1. This table or related slice is empty.
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    1. COId the data was pulled from the database as an object with mysql_fetch_object, what would the code become?
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      1. USCraig - Price Spin
    2. COWhat about using `mysql_fetch_assoc()`? That would be less hassle. Other than that, the code above is trivial enough. It should not be hard for you to make the necessary changes.
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A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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