json string passed in url which is encoded by urlencode - php

Question

I am using CodeIgniter 3.x.
User have this data : %7B%5C%22uid%5C%22%3A%5C%221234%5C%22%2C%5C%22uname%5C%22%3A%5C%22kishor%5C%22%7D
User send me the request and pass the data as parameter in url. The last parameter in url is nothing but the users data.
http://localhost/codeigniter/myproject/myfunction/%7B%5C%22uid%5C%22%3A%5C%221234%5C%22%2C%5C%22uname%5C%22%3A%5C%22kishor%5C%22%7D
The encoded data nothing but a json string which he want to encode and then send me the request. If I parse it using php then it yields this : '{"uid":"1234","uname":"kishor"}'
But it is not accepted in url, it gives me Object not found! error in browser.
Object not found!
The requested URL was not found on this server. If you entered the URL manually please check your spelling and try again.
If you think this is a server error, please contact the webmaster.
Error 404
I tried changing $config['permitted_uri_chars'] = 'a-z 0-9~%.:_\-';, but it doesn't work for me.

Answer 1

Assuming that your CodeIgniter is set up properly and routing things correctly then I recommend sending the JSON as a $_GET parameter:
http://localhost/codeigniter/myproject/myfunction/?json=%7B%5C%22uid%5C%22%3A%5C%221234%5C%22%2C%5C%22uname%5C%22%3A%5C%22kishor%5C%22%7D
So in CodeIgniter, you should be able to simply:
json_decode( $this->input->get( 'json' ) );

Answer 2

If you pass the below way than you have to pass argument in function.
http://localhost/codeigniter/myproject/myfunction/%7B%5C%22uid%5C%22%3A%5C%221234%5C%22%2C%5C%22uname%5C%22%3A%5C%22kishor%5C%22%7D
like this
function myfunction($param = ''){ echo $params; }

Answer 3

The way you are passing is not a proper way. If you need to get and decode that value, use following way in your controller function
i dont know which one is controller & function in your code, I guess myproject is a controller. So, i'm passing 3rd parameter Number 3 in segment
// it will return %7B%5C%22uid%5C%22%3A%5C%221234%5C%22%2C%5C%22uname%5C%22%3A%5C%22kishor%5C%22%7D
$json_value = $this->uri->segment(3);
$json_value = (array) json_decode(stripslashes(urldecode($json_value)));
var_export($json_value);
output
array (
'uid' => '1234',
'uname' => 'kishor',
)