PHP8 / Call to undefined function create_function()

Just an FYI for those still supporting this plug-in on modern servers, specifically PHP8 which has removed create_function().

Others have posted regarding this, but the one solution with a recommendation is not quite correct, so I figured I’d post this for any others in this situation.

In wp-spamshield.php, around line 2030, change

return preg_replace_callback( $regex_phrase, create_function( '$matches', 'return'.$encode_method.'($matches[0]);' ), $string );

to

return preg_replace_callback( $regex_phrase, function($matches) use( $encode_method ) { return $encode_method($matches[0]); }, $string );