Having PHP installed, But get undefined functions error!!

[scadran]

Hey guys
I have just installed PHP with MySql with Apache server. I have installed PHPMyAdmin too. I could successfully enter to PHPmyAdmin and login and use it properly. But when I code a PHP source myself and call it from localhost, nothing displays. I have debugged the php file in Zend Studio. It gave me this error:
[b]"Debug Error: ..\config.php line 11 - Call to undefined function mysql_connect()"[/b]
To tell you that I am sure about the correctness of my codes, I have paste them here:
[color=red]
[font=Verdana]$link = mysql_connect($db_host, $db_user, $db_pass);
if (!$link) {
    die('Could not connect: ' . mysql_error());
            }
echo 'Connected successfully';[/font][/color]

What do you think the problem is? Can anybody help???

[wildteen88]

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