[Cannot load libphp5.so: undefined symbol: _zend_list_delete]

I recently upgraded my MySQL to 5.0.19 and wanted to configure them in php.

i intaled from rpm :

MySQL-client-standard-5.0.19-0
MySQL-devel-standard-5.0.19-0
MySQL-server-standard-5.0.19-0
MySQL-shared-compat-5.0.19-0

then i tried to get them to work with php-5.1.1 so i did a

./configure --with-apxs2=/usr/local/apache2/bin/apxs --with-pear --with-mcrypt --with-mysql
make
make install

but whe i tried to start php i got the folowing error :

Syntax error on line 233 of /etc/httpd/conf/httpd.conf:
Cannot load /usr/local/apache2/modules/libphp5.so into server: /usr/local/apache2/modules/libphp5.so: undefined symbol: _zend_list_delete

can anybodey thell me what i have done rong or what do i have to do to fix this???