Added KH 3.3.0

includes/kohana/system/utf8/substr_replace.php

@@ -0,0 +1,22 @@
+<?php defined('SYSPATH') OR die('No direct script access.');
+/**
+ * UTF8::substr_replace
+ *
+ * @package    Kohana
+ * @author     Kohana Team
+ * @copyright  (c) 2007-2012 Kohana Team
+ * @copyright  (c) 2005 Harry Fuecks
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt
+ */
+function _substr_replace($str, $replacement, $offset, $length = NULL)
+{
+	if (UTF8::is_ascii($str))
+		return ($length === NULL) ? substr_replace($str, $replacement, $offset) : substr_replace($str, $replacement, $offset, $length);
+
+	$length = ($length === NULL) ? UTF8::strlen($str) : (int) $length;
+	preg_match_all('/./us', $str, $str_array);
+	preg_match_all('/./us', $replacement, $replacement_array);
+
+	array_splice($str_array[0], $offset, $length, $replacement_array[0]);
+	return implode('', $str_array[0]);
+}