First step, I installed a apache1.3.22 and php4.1.1 on my Linux(RH7.2). Then I packaged the two destination folder and moved them to a new Linux server. 
Then, I unpacked the binary package and modify the config files of apache. Now, my web server could be started, but when i use phpinfo() function, it showed that php.ini file is under /home/phpuser/php4/lib/php.ini. this is the folder under the first server, which I compiled php and apache. Now in the second server, the right folder should be:
/home/apacheuser/php/lib/php.ini Right?
I now that php4.0.5 will seek php.ini under /usr/local/lib,and this path exist on every machine. so I just need to do is copying the php.ini file into it. In fact, I think you guys are bright and make a greate progress to move php.ini under php/lib. After doing this, people can seek and modify php.ini under his/her own home folder and do not need to ask for some special privileges. I like this feature. 
The problem is, how can I change php.ini's location after installation?