Answer from Richard M on the question originally asked on StackOverflow:
Replacing line 21 on search.php with $search_query[$query_split[0]] = urldecode($query_split[1])
resolved it.
Answer from Richard M on the question originally asked on StackOverflow:
Replacing line 21 on search.php with $search_query[$query_split[0]] = urldecode($query_split[1])
resolved it.