Q:

PHP: header("Location ... suddenly stopped to work

I modified a very simple php page on my server:
<? php
   header("Location:http://www.google.com");
? >

and it stopped to work.  I get as result a blank page (Without source in it). 
I modified back to the previous url.. and it still doesn't work. 
What's going on ? 
Thanks

A:

<? php <-- check for whitespace before this (by popular demand)
   error_reporting(E_ALL); // report all error messages
   header("Location: http://www.google.com"); // leave a space between name and value
? > <-- remove this, or check for whitespace after it

My thinking is, there's a renegade whitespace character after your final closing tag or before the opening one.