Some one can geve me suggestions how many data base which support

php ?

Here is a list of databases that php supports. Some of them require extensions, some are supported out of the box. A lot of them I've never seen in use, but there's always someone out there using an obscure or outdated platform that they want supported (that's why you can still make good money as a cobol programmer).

Mysql is probably the most commonly used, I've also seen a lot of people using Mssql.

I just realized I said "here is a list of database" without posting the list:
http://www.php.net/manual/en/refs.database.php

I guess that's what happens when you don't sleep

Some one can geve me suggestions how many data base which support

php ?

Very Easily

There are NO databases that support PHP

however PHP supports -> http://www.php.net/manual/en/refs.database.php

for me MySql is the Best

Mysql