Obtain wordpress user role

Question

It is possible to obtain the user role in Wordpress from an external PHP application?

I explain myself better: I am using the OAuth server plugin in my Wordpress site and I have created a script in another PHP site so that it is only possible to access this site if the user is registered in the Wordpress site. Now what I need is to obtain the role of the user that is entering my PHP site, using Curl I have been able to obtain the Id assigned to the user in Wordpress but I need the role to assign privileges in my PHP site. Any way to do this? How do I get the user's credentials from an external PHP site?

Answer 1

I wanted the logged in user to get one form from other application only if he/she is Administrator and here is how I checked it. You can check for any role (even new role made through custom user role).

<?
require($_SERVER['DOCUMENT_ROOT'].'/wp-load.php');  //to load from any folder
$current_user = wp_get_current_user();
$user_info = get_userdata($current_user->ID);
if (in_array("administrator", $user_info->roles)) {
//greet or any other function to call if you want
} else {
die("Login as Admin to continue");
}
// other code below if user passed your role requirement
// otherwise the content will not be shown to him/her.
?>

We have to use in_array for checking user roles because you can assign multiple roles to users.

I saved that code in "chkuser.php" and in the beginning of any other php page, I do <? include "chkuser.php"; ?> and program will stop there if user was not an Administrator.