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Editorial Team
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Asked: 2026-06-05T14:07:02+00:00

I want to add functionality to check session ao. I created one function like

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I want to add functionality to check session ao. I created one function like checkSession in my app_controller. Now, the first time the application loads it redirects to the admin/users/login
page.

At this login form, if I insert correct data then it redirects to my applications home page. I have user admin prefixed in my application.so after successfull login I want to redirect to localhost/appName/admin so I wrote the below code:

$this->redirect(Router::url("/admin",true));

It works fine in local but when I upload it on server it shows me error like

Warning (2): Cannot modify header information - headers already sent by (output started at /Applications/MAMP/htdocs/pms/app/controllers/users_controller.php:192)

The code on 192 line is 

$this->redirect(Router::url("/admin",true));

Can you suggest me its alternative option?

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1 Answer

  1. Editorial Team

    “Warning (2): Cannot modify header information – headers already sent by (output started at /Applications/MAMP/htdocs/pms/app/controllers/users_controller.php:192)”

    The “headers already sent by” message occurs when you print something and then try to set a header, like the Location header used for redirection.
    Just make sure you’re not sending anything to the browser (printing) before calling the $this->redirect method.

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