Dynamic Copyright message in Drupal footer

If you want a dynamic footer in Drupal footer you can use thsi script.

The first year the messages sais:
Copyright© 2014PBC-techniek

All following years like:
Copyright© 2014-2015 PBC-techniek

The years are automaticly added

$NOW = date('Y');
if ( 
$NOW == $FROM ) {
} else {
$DATESTRING = $FROM. "-".date("Y");

<div class="copyright center">Copyright <?php print $DATESTRING; ?><sup>&copy;</sup><?php print variable_get('site_name');?><div>

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