'session' warning

A

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There are few question i wish to ask.. the error shown below--> ../function.php:130) is this meant i have sent session cookie in line 130 of the function.php file ???

Warning: session_start(): Cannot send session cookie - headers already sent by (output started at /home/eonenet/public_html/shopping_cart/function.php:130) in /home/eonenet/public_html/shopping_cart/db.php on line 30



Is this caused by the same error as well ???

Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /home/eonenet/public_html/shopping_cart/function.php:130) in /home/eonenet/public_html/shopping_cart/db.php on line 30


What does it mean by can not modify header information ??? I always encounter this when i use session..

Warning: Cannot modify header information - headers already sent by (output started at /home/eonenet/public_html/shopping_cart/function.php:130) in /home/eonenet/public_html/shopping_cart/db.php on line 31


Please advise.. TQ
 
This forum has a search function. It's hugely useful, especially in that this question has been answered no fewer than seven billion times previously. Please use it.

here's a good start:

http://www.php-forum.com/p/viewtopic.php?t=2712
 
Alicia said:
There are few question i wish to ask.. the error shown below--> ../function.php:130) is this meant i have sent session cookie in line 130 of the function.php file ???

Warning: session_start(): Cannot send session cookie - headers already sent by (output started at /home/eonenet/public_html/shopping_cart/function.php:130) in /home/eonenet/public_html/shopping_cart/db.php on line 30



Is this caused by the same error as well ???

Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /home/eonenet/public_html/shopping_cart/function.php:130) in /home/eonenet/public_html/shopping_cart/db.php on line 30


What does it mean by can not modify header information ??? I always encounter this when i use session..

Warning: Cannot modify header information - headers already sent by (output started at /home/eonenet/public_html/shopping_cart/function.php:130) in /home/eonenet/public_html/shopping_cart/db.php on line 31


Please advise.. TQ
Click to expand...
to you need understand what header send once per session or open page. and send firstly, before send any bytes of pages.
 
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