Please read and help me out :)

I am new to php =)

For the past few weeks, i been reading alot of php tutorials so i am familer with it.
I created a mysql databse named "blog", i am creating my frist blog page.

Well, i have this problem

I am trying to connect my varibles to the database i created but i am getting this error...



Warning: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at C:\wamp\www\phpvt\lesson01\global.php:2) in C:\wamp\www\phpvt\lesson01\global.php on line 3

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at C:\wamp\www\phpvt\lesson01\global.php:2) in C:\wamp\www\phpvt\lesson01\global.php on line 3

Fatal error: Call to undefined function mysql_connect_db() in C:\wamp\www\phpvt\lesson01\global.php on line 5

the code i added before the html tag is

<?php
	session_start();
	$connect = mysql_connect(localhost,root,"") or die(mysql_error());
	$db = mysql_connect_db(blog.$connect);
	$session_name = $_session['uid'];
	
?>

Code (markup):

Did i make a mistakes somewhere ??

Thanks

 

is $_session['uid'] set?

alternatively, i think you should use mysql_select_db

 

Oh i feel embarassed, Thanks alot