PHP could not load the mysql extension

Today made a day, finally the win2003 under the problem to solve, LoadModule php5_module E:\server\php528\php5apache2_2.dll may have some friends also know, add this sentence, do not need to copy php.ini to the system directory: PHPIniDir E:\server\php528\php.ini now I want to talk about the way not to copy libmysql.dll to the system directory, is to add this sentence: LoadFile "E:\server\php528\libmysql.dll" before loading php5_module.