Permission to use material in thesis!

Hello, My name is Joonas Savolainen, I'm studying applications development at Lahti Polytechnic, Finland. I'm currently writing a thesis on "PHP and databases - choosing the work pair for web applications", which basically compares the differences between MySQL and PostgreSQL from a PHP developer's point of view. The thesis is written in Finnish. (school regulations...) I'm asking if I could use the graphic found at www.php.net/usage.php to show the increase of PHP usage in my thesis. The graphic would be included in PHP's own section, in which I introduce PHP to the reader (about 5-10 pages). Naturally there would be a copyright indication. Please reply by the end of the week, since the thesis is due to be completed in less than two weeks time. Sincerely, /** * Joonas Savolainen * www.luckydreamer.com */