> [snip]
>>   $json = JSON_encode( $root );
> [/snip]
> Update on my test. This works perfectly Robert - thank you very much! But 
> there is one small problem that I am trouble-shooting: it only goes one layer 
> and doesn't progress any further. I suspect it is on this section of code 
> that I am going to add some stuff to to see what is happening.
> if( !($parents = &$children) ){
>           break;
>       }

It would appear that both arrays are empty on the next cycle through so the 
break occurs.
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