As has already been discussed elsewhere on these forums and in this thread, the LSAPI (6.2) provided for download on your website does not work with PHP 5.4. It does work fine for PHP 5.3. The bundled LSAPI with PHP 5.4 works fine but that is only version 5.5.
Edit: I do see now that you mentioned only copying *.c and *.h for PHP 5.3/5.4. Will have to get that a try I guess. Although replacing it entirely works fine on PHP 5.3.
Last edited by AndrewT; 06-11-2013 at 02:26 PM..