wp_specialchars_decode
Converts a number of HTML entities into their special characters.
wp_specialchars_decode( string $string, string|int $quote_style = ENT_NOQUOTES )
Specifically deals with: &, <, >, “, and ‘.
$quote_style can be set to ENT_COMPAT to decode ” entities, or ENT_QUOTES to do both ” and ‘. Default is ENT_NOQUOTES where no quotes are decoded.