title: get variable from url in php and store in database
body: <p>this is the example link <a href="http://geekzzz.tk/about/inde.php?payment_id=MOJO642000F92571423&amp;status=success" rel="nofollow">http://geekzzz.tk/about/inde.php?payment_id=MOJO642000F92571423&amp;status=success</a>  And i need to store the payment_id in my database. Whenever the user opens the same link again, then the url should not work. I think $_GET() code is the thing that we can store but i don't know how to do that. Please can anyone explain me in detail. I am a beginner. Help me </p>