如何在codeigniter中使用url路由

please suggest me url routing in codigniter.

i have a directory in my views folder name is admin

in url routing file i write

    $route['admin'] = "admin/login";

and second i have dynamic url with category name like

like www.exapmple.com/categoryname/pagename

for this i will wite code in my route file

 $route['(:any)/(:any)'] = 'Post/postdata/$1/$2';

but after this

i will not able go to admin page please suggest me something

In your routes config, put $route['admin'] = "admin/login"; before $route['(:any)/(:any)'] = 'Post/postdata/$1/$2';

As per Codeigniter's official documentation,

Routes will run in the order they are defined. Higher routes will always take precedence over lower ones.