Trying to get property of non-object json

Question

I have been trying to find the error but i cannt seems to figure it out..

json:

Array
 (
   [0] => Array
    (
        [url] => http://www.traviangames.com/de/
        [title] => Travian Games Magazin News Berichte Events
        [content] => Informiert euch im Travian Games Magazin überie      
    )

[1] => Array
    (
        [url] => http://www.dreamcatchergames.com/de/
        [title] => Nordic Games GmbH | Fresh From Austria
        [content] => Neues von Nordic Games? MX vs. ATV Supercross Encore rast auf current gen 
Konsolen zu! Nordic Games und Rainbow Studios bringen MX vs.
    )    

)

And if i do

echo $json[0]->url;

I am getting non-object error.

ohh btw I am the json value using print_r.