Howdy Listers, 

Can someone explain to me the mechanism by which SID acquires a value?

For example, 

echo $FOO;

produces something like "PHPSESSID=ade4055eef947f1a00cdb280470e859b" when 
IE is first opened and the page is loaded,
whereas reloading of the page produces an empty string when $FOO is 
echo'd. Seems to have something to do with creating a 
browser instance.


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