CodeIgniter headers already sent error with different Server

Question

I have a Code Ignitor 1.7.2 application which runs on a Windows 7 Apache Server. I copied the Application to Windows Pro SP2 Apache Server. Than I am getting the error

A PHP Error was encountered Severity: Warning Message: Cannot modify header information - headers already sent Filename: helpers/url_helper.php Line Number: 0

I again copied the application another Windows 7 PC and it is working. Usually this error comes if any space issue.

Please help how to solve this error.

I'm guessing this could be an easy fix - check character encoding, make sure the file is saved as UTF-8 *without* the BOM and make sure you have no hidden characters or spaces or anything in the file mentioned (at its beginning) — Zathrus Writer, Oct 10 '13 at 12:46
You probably have a rogue 'echo' or some kind of output happening before codeigniter's output class finally sends the headers. — rbaker86, Oct 10 '13 at 12:46

score 0 · Answer 1 · answered Oct 10 '13 at 12:45

0

please check whether you have 'echo'ed content the redirection page or diplayer any content in the redirection page

answered Oct 10 '13 at 12:45

Kalaiyarasan

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If echo issue why is it working in Windows 7 Apache deplyed machine and not in Windows XP machine. – user2834810 Oct 10 '13 at 16:59
Have you checked this link http://stackoverflow.com/questions/8028957/headers-already-sent-by-php – Kalaiyarasan Oct 11 '13 at 04:17

score 0 · Accepted Answer · answered Oct 13 '13 at 06:30

Thanks for your comments. I found the Bug. I am using a function to detect the MAC address of the system where I am using ob_start() and ob_clean(). This is causing the error.

Thanks and solved the issue to find the mac address without using those methods.

Thanks to all

CodeIgniter headers already sent error with different Server

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