Default Apache, PHP and MySql on Mac 10.6.8

May I know which Apache, PHP and MySql I am running if I decided to used other server solution/ packages (such as MAMP) than the one preinstalled on my Mac? If It possible to have multiple Apache, PHP and开发者_如何转开发 MySql running at the same time? Or would it be better if I just remove all the Apple's default installation?

Currently I have Apache (2.2.17), PHP (5.3.4) preinstalled on my Mac OS X 10.6.8. I don't see if I have any Mysql installed. May I know how to make connection to between Apache, PHP and mySql. I know there are connected through "socket" but how am I connect them If I have multiple version of the same thing installed?

Sorry for the long questions.

Thanks & Regards, Jeno

You can run multiple installs of Apache as long as each listens on different ports. You can run multiple MySQL installs as long as each listens on different ports & sockets and has a different data directory. You can even run the same install of either as multiple server instances; there's no real difference between the two scenarios.

Don't remove Apple's install of Apache or PHP. Instead, disable (or, in the case of Apache, don't enable) them.

MySQL isn't part of the default system software.

Apache generally doesn't interact with MySQL. PHP itself also doesn't interact with MySQL; it's PHP scripts that do, and that's a matter of using the correct connection information when the script creates the connection (e.g. when creating a PDO object). If there are multiple SQL servers running, simply use the appropriate port number or socket path.