Transformer Page

The Transformer

Make it big  : Transforming to upper case:  Hello World! becomes HELLO WORLD! 
Make it small: Transforming to lower case: HELLO WORLD! becomes hello world!
Make rot13 : A Kind of Cesar code, transforming by replacing each character by the letter 13 places further along in the alphabet(wrapping back if necessary).
Hello World! becomes Uryyb Jbeyq! And the best: Rot13(Rot13(x)) = x, i.e. Uryyb Jbeyq! becomes Hello World!

Fatal error: Uncaught Error: Call to undefined function mysql_connect() in /var/www/ud06_170/files/unten.html:5 Stack trace: #0 /var/www/ud06_170/html/comp/use/kg.html(83): include() #1 {main} thrown in /var/www/ud06_170/files/unten.html on line 5