Premature end of script headers

[nightowl]

I have PHP installed on my machine (currently windows one, but question applies to Linux one too). When I run a script via PHP as CGI, I get an Apache error ("Internal server error") and errors in the Apache logfiles ("Premature end of script headers"). When I run the same script with PHP as Apache module I get (as I prefer) the PHP errors ("Warning ... "). Of course, this is what I want - I want to be able to do some debugging on my script.

How come (and more important : how to prevent) Apache sends this error ? How come PHP as CGI doesn't generate the correct headers first ?

[superwormy]

Post the code that makes the error... there are TONS of things that could cause this to happen...

[nightowl]

the question is not really what in particular makes this error. It's more about: whenever I have an error in my PHP script, the CGI version of PHP doesn't allow me to do decent debugging since the error messages are not shown in my browser (I could of course have them all logged to the error log of Apache - is that the normal way to do ?)