你检查过mod_rewrite了吗？
甚至还有一个“重写查询字符串”的例子：
此解决方案与前面的解决方案相反，将路径组件（可能是PATH_INFO）从URL复制到查询字符串中。

# The desired URL might be /products/kitchen-sink, and the script expects
# /path?products=kitchen-sink.
RewriteRule "^/?path/([^/]+)/([^/]+)" "/path?$1=$2" [PT]

--https://httpd.apache.org/docs/current/rewrite/remapping.html#rewrite-query

应该可以与

RewriteEngine On
RewriteRule ^/(.*)$ searchresult?$1=$2 [R=301,L]