[topvip]

If you want to let my site's url looks like abc-cde-23.html, not 23/abc.html.

you also need to change:
at line 32 33

$keywords = str_replace(' ','_',$keywords);
$keywords = eregi_replace("[_]+",'_',$keywords);

something like:

$keywords = str_replace(' ','-',$keywords);
$keywords = eregi_replace("[_]+",'-',$keywords);