Hi All, I have all my data in my database. It has following 4 columns

id  source_clust    target_clust    result_clust

1    7       72      649
2    9       572     650
3    649     454     651
4    32      650     435

This data is like tree structure. source_clust and target_clust generate target_clust. target_clust can be source_clust or target_clust to make a new target_clust. Is there any php function or class that I can use to generate tree structure for my data????

I see this MySql site they are doing exactly what I need but I couldn't find how to implement that query in my data.

Thanks !