That file index.php was created by command with sudo

...
...access denied

I cant to just create or Drag and drop files into that folder

fapchat2
Not a particularly good idea, honestly.
You have made a root owned directory (meaning, a directory that in the default installation is meant to be very well guarded....) accessible for read, write and execute by everyone.
It should be best to create a virtual host for your needs pointing at a root directory in your home.

      davidjharder i mean taht if one i dont nead to hide a ability to create files in my folder from my parents(for example) and i cant understand who can do that except people who can use my computer.

        Okay, this is getting kinda silly and off-topic. Closing discussion since your matter has been resolved, although I would encourage you to follow @CorvusRuber's advise and use good security practices in the future.