<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

class MY_URI extends CI_URI

{

/**

* Filter segments for malicious characters

*

* @access private

* @param string

* @return string

*/

function _filter_uri($str)

{

if ($str != '' && $this->config->item('permitted_uri_chars') != '')

{

if ( ! preg_match("/^[\%\.\:\~A-Za-z0-9_\-\x{4e00}-\x{9fa5}]+$/u", $str))

{

show_error('The URI you submitted has disallowed characters.', 400);

}

}

// Convert programatic characters to entities

$bad = array('$', '(', ')', '%28', '%29');

$good = array('&#36;', '&#40;', '&#41;', '&#40;', '&#41;');

return str_replace($bad, $good, $str);

}

}