diff --git a/PhpRbac/src/PhpRbac/core/lib/rbac.php b/PhpRbac/src/PhpRbac/core/lib/rbac.php
index 9c2dc3e..e5c5530 100644
--- a/PhpRbac/src/PhpRbac/core/lib/rbac.php
+++ b/PhpRbac/src/PhpRbac/core/lib/rbac.php
@@ -775,6 +775,27 @@ function roles($Permission, $OnlyIDs = true)
     		    WHERE PermissionID=? ORDER BY TP.ID", $Permission );
 		}
 	}
+	/**
+	 * Returns all users with a permission
+	 *
+	 * @param integer $Permission
+	 *        	ID
+	 * @return Array 1D or null
+	 */
+	function users($Permission)
+	{
+		if (!is_numeric($Permission)) $Permission = $this->returnId($Permission);
+		$Res = Jf::sql ("SELECT DISTINCT(UserID) FROM {$this->tablePrefix()}permissions INNER JOIN {$this->tablePrefix()}rolepermissions ON {$this->tablePrefix()}permissions.ID = {$this->tablePrefix()}rolepermissions.PermissionID INNER JOIN {$this->tablePrefix()}roles ON {$this->tablePrefix()}rolepermissions.RoleID = {$this->tablePrefix()}roles.`ID` INNER JOIN {$this->tablePrefix()}userroles ON {$this->tablePrefix()}roles.`ID` = {$this->tablePrefix()}userroles.RoleID WHERE {$this->tablePrefix()}permissions.`ID` = ?", $Permission);
+		if (is_array ( $Res ))
+		{
+			$out = array ();
+			foreach ( $Res as $R )
+				$out [] = $R ['UserID'];
+			return $out;
+		}
+		else
+			return null;
+	}
 }
 
 /** @} */ // End group phprbac_permission_manager */