Can't remove special characters with str_replace

Question

I have a very trivial problem with str_replace.

I have a string with the En Dash character ( - ) like this:

I want to remove - the dash

Answer 1

I tried everything and nothing worked. but in the end with the help of http://www.ascii.cl/htmlcodes.htm

this code did work for me

        $arr1 = explode(",","0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F");
        $arr2 = explode(",","B,C,D,E,F");

        foreach($arr2 as $t1){
            foreach($arr1 as $t2){
                $val = $t1.$t2;
                $desc = str_replace(chr(hexdec($val)),"",$desc);
            }   
        }

        // if need removing individual value
        $desc = str_replace(chr(hexdec('A2')),"",$desc);