codeigniter如何设置没有段的路由，也没有段的路由

Question

I am stuck with route. Here is my route.

$route['login_register'] = 'welcome/login_register';

First time I don't want to pass any extra segment.
After Login fail,I want to redirect login_register function with failure argument in URL.
If I don't use /(:any),I can't access.

$this->uri->segment(2);

If i use /(:any),it is giving me error when first time redirecting.

$route['login_register/(:any)'] = 'welcome/login_register';

Answer 1

you cant do login_register and login_register/(:any) with same route. You can do one more thing with this.

Use one route

$route['login_register'] = 'welcome/login_register';

then inside function

public function login_register($value)
{
    if (empty($value)) { # first method
        echo "No argument passing";
    }
    else{ # second method
        echo "argument is there";;
    }
}

So when use passing data to controller send with / key. Ex:

<a href="<?php echo base_url() ?>login_register"> This print first method</a>
<a href="<?php echo base_url() ?>login_register/25"> This print second method</a>