[EST]

I got a problem when selecting database
This is the code that won't work

PHP Code:

$dbname = 'databasename';



mysql_select_db($dbname); 

This code is works

PHP Code:

mysql_select_db('databasename'); 

I don't know what the problem is, howcome if setup the variable for database's name it unable to select database? can someone tell he how to setup one?