Tutorial :how do you detect if your website visitor came from a google search result?


when a user searches from google and lands on our site from the results he/she was shown in the results page, is there a way for my site to detect that he came from google?


Check the $_SERVER['HTTP_REFERER'] variable which should contain the referring URL. Please note that this is not tamper-proof or fail-safe as the Http-Referer header can easily been changed or modified by a client.

EDIT: Just googled for phpinfo (because chanes were high that I get a phpinfo() page that shows the $_SERVER['HTTP_REFERER'] variable) to show you how the Http-Referer will look like:

$_SERVER['HTTP_REFERER'] = "http://www.google.de/search?hl=de&q=phpinfo&btnG=Google-Suche&meta="  

As you see, you can also extract the search term used in the google query (or detect if the search was initiated by the Google Chrome address bar)...


It looks like you can use the $_SERVER['HTTP_REFERER'] variable. But I think the value is controlled by the client and can't always be guaranteed to exist or accurate.


Yes, use the HTTP_ REFERER var in the $_SERVER array:


This shoudl then include something like http://www.google.com/?q=etc

Note however that the REFERER is not always set because clients can disable their browser to send it in the request.


You would check the $_SERVER['HTTP_REFERER'] if you wanted to do it in PHP. You can also use document.referrer in javascript.


Check referrer of a request. It should contain www.google.com/...


HTTP_REFERER : Returns a string containing the URL of the page that referred the request to the current page using an tag. If the page is redirected, HTTP_REFERER is empty.

Using HTTP_REFERER used for ASP.

Note:If u also have question or solution just comment us below or mail us on toontricks1994@gmail.com
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