<?php

(defined('BASEPATH')) or exit('No direct script access allowed');

class MY_Input extends CI_Input
{
    public function __construct()
    {
        parent::__construct();
    }

    protected function _fetch_from_array(&$array, $index = null, $xss_clean = null)
    {
        is_bool($xss_clean) or $xss_clean = $this->_enable_xss;

        // If $index is NULL, it means that the whole $array is requested
        isset($index) or $index = array_keys($array);

        // allow fetching multiple keys at once
        if (is_array($index)) {
            $output = [];
            foreach ($index as $key) {
                $output[$key] = $this->_fetch_from_array($array, $key, $xss_clean);
            }

            return $output;
        }

        if (isset($array[$index])) {
            $value = $array[$index];
        } elseif (($count = preg_match_all('/(?:^[^\[]+)|\[[^]]*\]/', $index, $matches)) > 1) { // Does the index contain array notation
            $value = $array;
            for ($i = 0; $i < $count; $i++) {
                $key = trim($matches[0][$i], '[]');
                if ($key === '') { // Empty notation will return the value as array
                    break;
                }

                if (isset($value[$key])) {
                    $value = $value[$key];
                } else {
                    return null;
                }
            }
        } else {
            return null;
        }

        if (is_array($value)) {
            return $this->security->xss_clean($value);
        }

        return ($xss_clean === true)
            ? addSlashes(stripslashes($this->security->xss_clean($value)))
            : addSlashes(stripslashes($value));
    }
}