Here is a sample table format I use: 
autoid bigint unsigned primary key auto_increment,
MemberId bigint unsigned,
referrer_id bigint unsigned,
...

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each member has a unique MemberId, when they refer someone that person gets the referrers MemberId in the referrer_id field so for instance: You join, let's say your MemberId is 427890 (the next available id) and you refer John, John would have a record like this:
autoidMemberIdreferrer_id
427891427891427890


Then let's say John referrs Jane:
autoidMemberIdreferrer_id
427892427892427891


So you would have 2 levels of referrers, John and Jane, John is whom you referred, but we would not have Jane either if you did not refer John.

That is how I did it.

Thank you very much Rich

In reply to Re^2: Recursive programming question by ukndoit
in thread Recursive programming question by ukndoit

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