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I tested on my local Mac's (OS X 10.6.8) Apache. Just now, I did a print_r($_SERVER) from a PHP script, and it shows these three cookies.

What is that all about? I didn't set them. Is this something Safari sets up?

They are: __unam=blah; __qca=POblah; __switchTo5x=25

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There is only one file. All it does is check the request string, and output print_r($SERVER). Nothing else. – Bobbi Bennett Jan 27 '12 at 23:25
up vote 1 down vote accepted
  • __qca is from Quantcast
  • __unam and __switchTo5x are from ShareThis

Presumably you have code for these services somewhere in whatever HTML documents you've been working on.

Most services don't reference their cookies by name when disclosing what data they collect, etc. so you'll have to search around a bit for any details.

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Are you saying code somewhere else on the site somehow can create these cookies, to then be served by any other page? – Bobbi Bennett Jan 27 '12 at 23:30
and thanks for the info on where they are from. – Bobbi Bennett Jan 27 '12 at 23:31
@BobbiBennett Cookies can be set site-wide. Cookies are send at every request. – PeeHaa Jan 28 '12 at 1:20

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