Redirect to the page requested before login

Hi experts,
Please help me solve this problem:

Suppose a user tries to access 'http://localhost/dir A/restricted.php' page. Since the user is not logged in, he is redirected to 'login.php' page.
Once the user logs in successfully, he is redirected to the page he previously requsted that is : 'http://localhost/dir A/restricted.php.'

Please help me know, how can i implement this redirection to the previously requested page after the user logs in?

Thanks
sandhya01Asked:
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Roger BaklundCommented:
When you check access and decide you need to redirect to login.php, either set a session variable or include the url of the page in the url to login.php. Then in login.php, check if this session/url variable exists, if so, redirect to that page after a successfull login. If you use the url variable emthod, you must also put it as a hidden variable on the login form, and fetch it after login so that you know where to redirect. Remember to use urlencode() when you put an url within the url.
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