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

  • There is only one file. All it does is check the request string, and output print_r($SERVER). Nothing else. Jan 27, 2012 at 23:25

1 Answer 1

  • __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.

  • Are you saying code somewhere else on the site somehow can create these cookies, to then be served by any other page? Jan 27, 2012 at 23:30
  • 1
    @BobbiBennett Cookies can be set site-wide. Cookies are send at every request.
    – PeeHaa
    Jan 28, 2012 at 1:20

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