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Posted by windandwaves on 10/26/05 04:09
Hi Folk
I want to create something like AMAZON: those who liked page A also liked
page B (I am going to apply the concept to a few different selections, but
to keep it simple I will talk about page popularity here - like AMAZON talks
about purchase patterns: those who bought A also bought B, C and D).
In my mysql table, I record everytime a visitor looks at a particular page
(I keep track of people with sessions and they can only look at a page
once).
Next, what I want to do is to show a small list of similar likes. That is,
people who had an interest in page A also had an interest in page B.
The structure of my table is:
id
timestamp
session_id
page_name
There is a unique index on the combination of session_id and page_name.
To work out similar likes for page X, my idea was to make an array of all
the session ids that looked at page X and then select the top 10 of pages
that these folk looked at.
My question is, should I do this in PHP with a bunch of arrays, adding total
counts while looping through an array or shall I use SQL statements. I
could even make a really long string of WHERE session_id = A or session_id =
B, etc..... Although this seems really inefficient.
Another question I have is whether you think this will be a self-fulfilling
prophecy (e.g. if you say that page Y is also popular then people will check
it out and therefore make it more popular).
TIA
- Nicolaas
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