What's the best way to remove Registered, Trademark, and Copyright symbols from a string?

Question

What's the best way to remove symbols, like the Registered, Trademark, and Copyright symbols from a string?

For instance I'd like to strip the ® out of the following: $string = 'Can't Touch This®';

Answer 1

If you know what you want to remove, then use str_replace()

For instance:

 $my_string = str_replace(array('®', '™'), array('', ''), $my_string)

If you've got a long list of 'forbidden' characters, you could use array_fill(0, count($forbidden_list), '')

Answer 2

$str = preg_replace("/(™|®|©|™|®|©|™|®|©)/", "", $str);