How can I know which website the member has visited previously?

Posted by Tom on Stack Overflow See other posts from Stack Overflow or by Tom
Published on 2010-06-16T22:16:07Z Indexed on 2010/06/16 22:22 UTC
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So, I can use getenv('HTTP_REFERER') to get an URL which the member has visited previously, but it works only if it's the same website. I want this:
for example. the member firstly visits google.com then goes to my website. I want to show him, that previously he visited a google.com website. How can I do it if it's possible?

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