#exportable
assign $trangchu=index
assign $trangkhac=blog/index
assign $blog=;
assign $blog=call str_replace $subject=$blog; $search=$trangchu;$replace=$trangkhac
assign $blog=call str_replace $subject=$blog;$search= ;$replace=
assign $blog=call str_replace $subject=$blog;$search=;$replace= ;
print $blog