Php regular match or str_replace how to replace the English degree symbol

How does php regular expression match or str_replace replace the English degree symbol? I want to convert the English & nbsp; degree & nbsp; special symbol into "". I have never been able to write it properly. Does anyone know? Thank you for your help !, $ Str = "dfdfsdsf ° zgy ° php regular expression matching or str_replace how to replace the English degree symbol?
I want to convert the special English level symbol into "". I haven't made a good decision on how to write it. Does anyone know? Thank you for your help!
------ Solution --------------------

$ Str = "dfdfsdsf ° zgy ° 90 ° ";
Echo str_replace ('°', '', $ str )."
";
Echo preg_replace ('/(°) +/', '', $ str );