Make Input::only() and Input::except() into array_only() and array_except() helpers.

Signed-off-by: Colin Viebrock <colin@viebrock.ca>

laravel/helpers.php

@@ -245,6 +245,30 @@ function array_pluck($array, $key)
 	}, $array);
 }
 
+/**
+ * Get a subset of the items from the given array.
+ *
+ * @param  array  $array
+ * @param  array  $keys
+ * @return array
+ */
+function array_only($array, $keys)
+{
+	return array_intersect_key( $array, array_flip((array) $keys) );
+}
+
+/**
+ * Get all of the given array except for a specified array of items.
+ *
+ * @param  array  $array
+ * @param  array  $keys
+ * @return array
+ */
+function array_except($array, $keys)
+{
+	return array_diff_key( $array, array_flip((array) $keys) );
+}
+
 /**
  * Transform Eloquent models to a JSON object.
  *