Re: headers already sent

[pete M <pmorgan@xxxxxxxx>]

make susre that the <?php does not have any whitespace before it.. 
caught me out on a few ocassions - eg in an include file as trailing spaces

pete

Matthew Perry wrote:

> When I insert the following header:
>
>      header ("Content-type: application/vnd.ms-excel");
>      header ("Content-Disposition: attachment" );
>
> I get the messages:
>
> *Warning*: Cannot modify header information - headers already sent by 
> (output started at C:\Program Files\Apache 
> Group\Apache2\htdocs\trial.php:2) in *C:\Program Files\Apache 
> Group\Apache2\htdocs\trial.php* on line *3*
>
> *Warning*: Cannot modify header information - headers already sent by 
> (output started at C:\Program Files\Apache 
> Group\Apache2\htdocs\trial.php:2) in *C:\Program Files\Apache 
> Group\Apache2\htdocs\trial.php* on line *4
>
>
> *I get similar messages when I use my web host.  How do I use these 
> headers correctly?
>
> Matt

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