Mapserver install

[Ryan Ollerenshaw]

The Error that i am getting:
*Warning*: dl() [function.dl <http://neuron/mapserver/function.dl>]: 
(null): Unable to initialize module Module compiled with module 
API=20050922, debug=0, thread-safety=0 PHP compiled with module 
API=20020429, debug=0, thread-safety=0 These options need to match in 
*/var/www/htdocs/mapserver/phpinfo_mapscript.phtml* on line *21

*this occures when i try to call dl('php_mapscript.so')*
*
Here is the configure that i am using:
./configure --with-proj=/usr/local/  --enable-runpath 
--with-geos=/usr/local/bin/geos-config 
--with-ogr=/root/FWTools-1.0.5/bin/gdal-config 
--with-gdal=/root/FWTools-1.0.5/bin/gdal-config 
--with-postgis=/usr/local/pgsql/bin/pg_config 
--with-curl-config=/usr/bin/curl-config 
--with-php=/usr/local/include/php  --with-wcs --with-wfs 
--with-wmsclient --with-wfsclient --with-threads

I then
    make mapscript/php3/php_mapscript
    cp mapserv /var/www/cgi-bin/
    cp mapscript/php3/php_mapscript.so /path/to/php/extenstion/directory

Any idea on what i could be missing? or how i can better find out what 
the problem is?