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3:28 am, October 17, 2021
 

using the $_SERVER['HTTP_REFERER'] to check referring pages

shows how you can display the contents of the $_SERVER['HTTP_REFERER'] tag in php to show referring pages

i read in an article that this is stripped out of HTTPS requests, but it seems to still be working for me when testing. This article also mentioned that you should not use this tag as its easily modified, but it could be interesting to still check what is included here. 

PHP

echo $_SERVER['HTTP_REFERER'];

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