Linux, Apache, MySQL, PHP

# mouse move
if e.type==pygame.MOUSEBUTTONDOWN:
                #movehero
                movehero=True
            if e.type==pygame.MOUSEBUTTONUP:
                movehero=False
                if movehero==True:
                   # the movement code

<?php<br />
echo "Hello World";<br />
?>

I am trying to install LAMP in ubuntu
For that
I completed the following steps successfully in the order shown below

   1. sudo apt-get install apache2
   2. sudo /etc/init.d/apache2 start
   3. sudo apt-get install php5 libapache2-mod-php5
   4. sudo /etc/init.d/apache2 restart

After the above steps I created a PHP page named test.php in /var/www
The contents of test.php is
<?php
echo "Hello World";
?>


I am 100% sure that there is no syntactical errors in the php code.
But when I access the page using "http://localhost/test.php", the following error showed


Parse error: syntax error, unexpected T_STRING, expecting ',' or ';' in /var/www/test.php on line 2


I don't know what to do at this situation. Please suggest me a solution.