Added Compat.php file
diff --git a/system/codeigniter/Compat.php b/system/codeigniter/Compat.php
new file mode 100644
index 0000000..3c5f70d
--- /dev/null
+++ b/system/codeigniter/Compat.php
@@ -0,0 +1,84 @@
+<?php if (!defined('BASEPATH')) exit('No direct script access allowed');
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP 4.3.2 or newer
+ *
+ * @package CodeIgniter
+ * @author Rick Ellis
+ * @copyright Copyright (c) 2006, EllisLab, Inc.
+ * @license http://www.codeigniter.com/user_guide/license.html
+ * @link http://www.codeigniter.com
+ * @since Version 1.0
+ * @filesource
+ */
+
+// ------------------------------------------------------------------------
+
+/**
+ * Compatibility Functions
+ *
+ * Function overrides for older versions of PHP or PHP environments missing
+ * certain extensions / libraries
+ *
+ * @package CodeIgniter
+ * @subpackage codeigniter
+ * @category Compatibility Functions
+ * @author EllisLab Development Team
+ * @link http://www.codeigniter.com/user_guide/
+ */
+
+// ------------------------------------------------------------------------
+
+/*
+ * PHP versions prior to 5.0 don't support the E_STRICT constant
+ * so we need to explicitly define it otherwise the Exception class
+ * will generate errors when running under PHP 4
+ *
+ */
+if ( ! defined('E_STRICT'))
+{
+ define('E_STRICT', 2048);
+}
+
+/**
+ * ctype_digit()
+ *
+ * Determines if a string is comprised only of digits
+ * http://us.php.net/manual/en/function.ctype_digit.php
+ *
+ * @access public
+ * @param string
+ * @return bool
+ */
+if (! function_exists('ctype_digit'))
+{
+ function ctype_digit($str)
+ {
+ return ! preg_match('/[^0-9]/', $str);
+ }
+}
+
+// --------------------------------------------------------------------
+
+/**
+ * ctype_alnum()
+ *
+ * Determines if a string is comprised of only alphanumeric characters
+ * http://us.php.net/manual/en/function.ctype-alnum.php
+ *
+ * @access public
+ * @param string
+ * @return bool
+ */
+if (! function_exists('ctype_alnum'))
+{
+ function ctype_alnum($str)
+ {
+ return ! preg_match('/[^0-9a-z]/i', $str);
+ }
+}
+
+// --------------------------------------------------------------------
+
+?>
\ No newline at end of file