incomplete http header?

I often get into this error recently. What could be the possible cause?



CGI Error
The specified CGI application misbehaved by not returning a complete set of HTTP headers. The headers it did return are:

That's an interesting error message. What version of PHP are you using, and which webserver? I am assuming from that error message that you are using the standalone 'CGI' PHP executable.

If it is the standalone executable version, you could try executing it from the command line and watching the output. Specifically, you want to see the:

X-Powered-By: PHP/4.x.x
Content-type: text/html

Headers, which would be a fairly good indication that PHP itself isn't doing anything strange. Generally, a CGI program simply has to output the content-type header and a carraige return after the last header and before the start of the content for the webserver to be happy.

I am using PHP 4.1.1 on IIS 5.1
hm,..
to ngardiner: I am new to php. How to execute it from command line?
would you give me exact command?