PHP DB Extensions FAILED!!!

[rps]

Hello

i am trying to install Test Link1.9. On "Verification and Configuration Requirements" page every thing passes. On next page " Definition of DB access" I enter my Database admin login and password. Till now every thing is OK.
When I click "Process Test Link Setup!" I get "page can be found" or "Can not find server" with different browsers. When I refresh the page I get following Error

Checking PHP DB extensions Warning!: Your PHP installation don't have the extension - without it is IMPOSSIBLE to use Testlink.Failed!

Can any one please help me with this. I am new to Test Link

Thanks

[fman]

Sorry very much but with the amount of details you have provided, I think nodoby will be able to help.
No details about:
operating system
db
webserver

[rps]

Hi fman

It is on Linux OS , Apache Web server and and we are using MySQL database. I have tried different web browsers but it is same will all.

[fman]

PHP version ?
What Linux ?

[rps]

PHP version is 5.3.3, Linux version I don't know. We are trying to set it up on Apache Server which is on Linux.

[TurboPT]

PHP no longer includes the MySQL extension, that now has to be installed separately.

For my Fedora, the command to install the extension is:

yum install php-mysql

So you need to find the command that works for your system that does the same.