How to make CodeIgniter accept “query string” URLs?

问题

According to CI's docs, CodeIgniter uses a segment-based approach, for example:

example.com/my/group

If I want to find a specific group (id=5), I can visit

example.com/my/group/5

And in the controller, define

function group($id='') {
    ...
    }

Now I want to use the traditional approach, which CI calls "query string" URL. Example:

example.com/my/group?id=5

If I go to this URL directly, I get a 404 page not found. So how can I enable this?

回答1:

For reliable use of query strings I've found you need to do 3 things

1. In application/config/config.php set $config['enable_query_strings'] = true;
2. Again in application/config/config.php set $config['uri_protocol'] = "PATH_INFO";
3. Change your .htaccess to remove the ? (if present) in the rewrite rule

I use the following

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php/$1 [L]

回答2:

//Add this method to your (base) controller :
protected function getQueryStringParams() {
    parse_str($_SERVER['QUERY_STRING'], $params);
    return $params;
}


// Example : instagram callback action
public function callback()
{
    $params = $this->getQueryStringParams();
    $code = !empty($params['code']) ? $params['code'] : '';

    if (!empty($code))
    {
        $auth_response = $this->instagram_api->authorize($code);

        // ....  
    }

    // .... handle error
}    

回答3:

This might help some people; put this into your controller's constructor to repopulate $_GET on a controller-by-controller basis (e.g. if you are integrating a third party lib that relies on $_GET - such as most PHP OAuth libraries).

parse_str(str_replace($_SERVER['QUERY_STRING'],'',$_SERVER['REQUEST_URI']),$_GET);

回答4:

You may change URI PROTOCOL in your config file to

  $config['uri_protocol']   = "ORIG_PATH_INFO"; 

and

  $config['enable_query_strings'] = FALSE;

It'll accept query strings and allow your URLs. Worked for me :)

回答5:

Html:

<a href="?accept=1" class="btn btn-sm btn-success">Accept</a>

Controller Function

if ($this->input->get('accept')!='')
{
    $id = $this->input->get('accept', TRUE );
    $this->camprequests->accept($id);
    redirect('controllername/functionname');
}

Model Function

public function accept($id)
{
    $data = array('status'=>'1');
    $this->db->where('id','1');

    if($this->db->update('tablename',$data)) {

        $this->session->set_flashdata("accpeted","<div class='col-sm-12 alert alert-success'>Accpeted successfully.</div>"); 

    } else { 

        $this->session->set_flashdata("accpeted","<div class='col-sm-12 alert alert-success'>Error..</div>");  
    }
}

回答6:

Modify application/config.php at the line:

$config['enable_query_strings'] = FALSE;

Make this true instead. There are other details you'll have to pay attention to also. See here.

回答7:

After setting $config['enable_query_strings'] = TRUE; in your config.php file, you can use the segment-based approach in conjunction with query strings, but only if you use 2 or more variables (separated by a "&") in the query string like this:

example.com/my/group?id=5&var=something

See this answer for more information.

回答8:

CodeIgniter optionally supports this capability, which can be enabled in your application/config.php file. If you open your config file you'll see these items:

enter code here $config['enable_query_strings'] = FALSE;

$config['controller_trigger'] = 'c'; $config['function_trigger'] = 'm';

If you change "enable_query_strings" to TRUE this feature will become active.

回答9:

This is actually tested and confirmed

It works with any method you like; giving you freedom to mix match the query string and / segment approach (as opposed to the previous responses)

either you want to use:

example.com/my/group/?id=5

(please note the trailing / before ?). OR

 example.com/my/group/5 

(depending on your url pattern definitions in the router file). OR EVEN

example.com/index.php/?my/group/?id=5

(though that looks awkward enough)

RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php/$1 [L]

and in you codigniter's config/config.php file, set

$config['uri_protocol'] = 'AUTO';
$config['enable_query_strings'] = TRUE;

来源：https://stackoverflow.com/questions/2894250/how-to-make-codeigniter-accept-query-string-urls