Headers already sent

[jenkinsharry280]

Hi,
I downloaded the latest OC 1.5.3. Using WAMP I set up and run my website on my local machine and now I have uploaded the files to the actual host, configured DB and updated config.php files with the correct info. However when I try to access my website using the temporary URL, the website works but I see the following error message at the top:

Warning: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at /home/beautyst/public_html/config.php:47) in /home/beautyst/public_html/system/library/session.php on line 11Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /home/beautyst/public_html/config.php:47) in /home/beautyst/public_html/system/library/session.php on line 11Warning: Cannot modify header information - headers already sent by (output started at /home/beautyst/public_html/config.php:47) in /home/beautyst/public_html/index.php on line 175Warning: Cannot modify header information - headers already sent by (output started at /home/beautyst/public_html/config.php:47) in /home/beautyst/public_html/system/library/currency.php on line 45

Any idea why this is happening and how to solve it?

Thanks

I didn’t find the right solution from the internet.
References:
https://forum.opencart.com/viewtopic.php?t=49612

[John_Betong]

Hi @jenkinsharry280 and welcome to the forum.

Try searching for every session_start(); and use the following script or something similar:

if ( isset( $_SESSION ) ):
  // no need to load again
else:
  session_start();
endif;  

[droopsnoot]

@jenkinsharry280

Any idea why this is happening and how to solve it?

It’s happening because you must call session_start() before any output to the browser. So even having a blank line in your page source prior to opening PHP tags can cause it.