install.hello_world.php - The installer file.

<?php
function com_install() {
  echo "Thank you for using this component. Please contact me at This email address is being protected from spam bots, you need Javascript enabled to view it with any questions";
}
?>

It is important to have the function com_install() call inside this file or else it will cause errors. Other than that you can have anything here you want.

uninstall.hello_world.php - The uninstall file.

<?
function com_uninstall() {
 echo "Thank you for using this component. Please contact me at This email address is being protected from spam bots, you need Javascript enabled to view it with any questions";
}
?>

It is important to have the function com_uninstall() call inside this file or else it will cause errors. Other than that you can have anything here you want.