Product detail page does not load properly

Hi Dear,

My website product details page is not loading properly. when it is loaded it show this message "Allowed memory size of 33554432 bytes exhausted (tried to allocate 2000 bytes)" but i changed php.ini file that Memory 512 Mb. now what should i do in here???

you need to edit the php.ini.sample file in magneto root folder rename the file to php.ine

add below code
disable_functions =
memory_limit = 384M
extension=pdo.so
extension=pdo_mysql.so
extension=pdo_sqlite.so