added has() method to input class

inc/Input.class.php

@@ -27,6 +27,19 @@ class Input {
         $this->get    = new GetInput();
     }
 
+    /**
+     * Check if a parameter was set
+     *
+     * Basically a wrapper around isset
+     *
+     * @see isset
+     * @param $name Parameter name
+     * @return bool
+     */
+    public function has($name) {
+        return isset($this->access[$name]);
+    }
+
     /**
      * Access a request parameter without any type conversion
      *