footer copyright problem

HI again
I modified the copyright in the footer.php file but I think I did something wrong. Can you check this code? Is there a way to revert to the original .php file if mistakes are made?

// you can filter and remove the backlink with an add_filter function
// from your themes (or child themes) functions.php file if you dont want to edit this file
// you can also just keep that link. I really do appreciate it ;)
$kriesi_at_backlink = apply_filters(“kriesi_backlink”, ” This Is Touch / tel: +45 21 47 68 50 / (Email address hidden if logged out) “>email: (Email address hidden if logged out) / Copyright © 2014 This Is Touch. All rights reserved.”);

//you can also remove the kriesi.at backlink by adding [nolink] to your custom copyright field in the admin area
if($copyright && strpos($copyright, ‘[nolink]’) !== false)
{
$kriesi_at_backlink = “<?php echo $kriesi_at_backlink; ?>”;
$copyright = str_replace(“[nolink]”,””,$copyright);
}

thanks