Make your WINDOWS support MYSQL4, MYSQL4.1, and MYSQL5X at the same time

Let your WINDOWS support MYSQL4, MYSQL4.1, and MYSQL5X as a PHP + MYSQL (other databases) programmer, you may want to meet different needs, however, tests must be performed in different database versions.
However, when MYSQL is installed normally, only one version of MYSQL database exists in windows. Therefore, you need to change the port and the service name in the system service to OK.
The installation sequence is as follows:
1. install MYSQL4.0.X first. because this version does not have the intelligence of MySQL 4.1 and 5.x, you can select the name of the installed service. Therefore, you have to install MySQL 4.0.X first, or you can use the reverse sequence.
2. install 4.1 or 5.xin no particular order, because you can select the name of the installed service.
3. download PHPMYADMIN and copy the three copies to change the port respectively.
$ Cfg ['servers'] [$ I] ['port'] = ''; // MySQL port-leave blank for default port

My ports are:
MYSQL4.0.26 Port: 3304
MYSQL4.1.20 Port: 3305
MYSQL5.1.6 default port: 3306

In this way, you can use PHPMYADMIN to manage different versions of MYSQL.