Resquest Server question?

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1

Could an app open on a webpage when a particular server requests a certain page???

2

Sorry, but you’ll have to give a little more information. Your question isn’t very clear.

3

If I build a application for a friends website and if i put a link to his website could there be a script for that application to open only when people click on the link from my site???

4

I can only think of 2 ways, neither of which is foolproof.

Use the HTTP referer header to test if they came from your page

  • can be spoofed or not sent

Use a GET variable

  • can be added to the URL and reused anytime
5

Thank you! How could it be done in PHP?

6

Basic stuff, just test for the SERVER and/or GET variables

if ( isset($_SERVER['HTTP_REFERER'])
 && ($_SERVER['HTTP_REFERER'] == 'my_site')
 && isset($_GET['my_var'])
 && ($_GET['my_var'] == 'my_var_val') )
{
  showMyWidget();
}
7

Thanks a lot really helpful!