[Typo3-dev] Cannot modify header information - headers already sent

Pedro Barbosa pbarbosa at inescporto.pt
Thu Nov 10 18:16:15 CET 2005


Thanks for that Wolfgang Klinger.
When i open the website the warning doesn't appear, however when i click 
in the submit button the warnign comes up again.

Anyone?
thanks
Pedro Barbosa

Wolfgang Klinger wrote:

> Hi!
>
> On Thu, 10 Nov 2005, Pedro Barbosa wrote the following:
>  
>
>>I'm  getting started in typo3 and i wanted to include php script.
>>Justo for fun(or not) i created a calculator in php and when i open the 
>>website i get the following warning:
>>*Warning*: Cannot modify header information - headers already sent by 
>>(output started at ..../scripts/calculadora.inc:41) in 
>>*/var/www/html/sigtest/typo3_src-3.8.0/typo3/sysext/cms/tslib/class.tslib_fe.php* 
>>on line *2612*
>>    
>>
>
> You use "echo" for output. That's not how it works with TYPO3. You need
> to return the content, TYPO3 "collects" all the pieces and sends it to
> the client when finished (plus some "headers" beforehand like a Cookie
> or something).
>
>
> kind regards
> Wolfgang
>
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>





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