printstring($string); //This already prints something, so it doesn't need a print for it
print "Here is the same string twice!\n"; //Wow!
print $pf->repeatstring($string, 2); //Call the function that we 'made' and print the returned string
print "\nTry to understand this...\n"; //It's a challenge!
$rot13str = $pf->rotatethirteen($string); //Get the rot13 version of the string and store it as a variable
print $rot13str; //Print that variable
print "\nWell, here's that string... with each character rotated by 13 places...\n"; //Aka, the original string
print $pf->rotatethirteen($rot13str); //Print the original or rot13(rot13(string)) version
print "\nGet it now?"; //Duh?
die("\nOh noes, I r dead.