MY Input

Category:Libraries::Extended

Additional/overwritten methods for the Input library.

Add the methods you find useful

class MY_Input extends CI_Input
{

       function MY_Input()
       {
          parent::CI_Input();
       }

       /**
       * Sanitize Globals
       *
       * removed sanitizing of post and cookie values
       */
        function _sanitize_globals()
    {
        // Would kind of be "wrong" to unset any of these GLOBALS
        $protected = array('_SERVER', '_GET', '_POST', '_FILES', '_REQUEST', '_SESSION', '_ENV', 'GLOBALS', 'HTTP_RAW_POST_DATA',
                            'system_folder', 'application_folder', 'BM', 'EXT', 'CFG', 'URI', 'RTR', 'OUT', 'IN');
        
        // Unset globals for security. 
        // This is effectively the same as register_globals = off
        foreach (array($_GET, $_POST, $_COOKIE, $_SERVER, $_FILES, $_ENV, (isset($_SESSION) && is_array($_SESSION)) ? $_SESSION : array()) as $global)
        {
            if ( ! is_array($global))
            {
                if ( ! in_array($global, $protected))
                {
                    unset($GLOBALS[$global]);
                }
            }
            else
            {
                foreach ($global as $key => $val)
                {
                    if ( ! in_array($key, $protected))
                    {
                        unset($GLOBALS[$key]);
                    }
                    
                    if (is_array($val))
                    {
                        foreach($val as $k => $v)
                        {
                            if ( ! in_array($k, $protected))
                            {
                                unset($GLOBALS[$k]);
                            }
                        }
                    }
                }    
            }
        }

        // Is $_GET data allowed? If not we'll set the $_GET to an empty array
        if ($this->allow_get_array == FALSE)
        {
            $_GET = array();
        }
        else
        {
            if (is_array($_GET) AND count($_GET) > 0)
            {
                foreach($_GET as $key => $val)
                {
                    $_GET[$this->_clean_input_keys($key)] = $this->_clean_input_data($val);
                }
            }
        }
        
    }

        /**
         * Fetch an item from the POST array
         *
         * added a default as second argument to define a value if needed
         * example : $this->input->post('fieldname','default value');
         * set $xss_clean to NULL for clarity and added an extra condition for the 
         * xss cleaning to overwrite the xss cleaning setting in the config file.
         */
        function post($index = '', $default = FALSE, $xss_clean = NULL)
    {        
        if ( ! isset($_POST[$index]))
        {
            return $default;
        }

        if ($xss_clean === TRUE || ($this->use_xss_clean === TRUE && $xss_clean !== FALSE))
        {
            if (is_array($_POST[$index]))
            {
                foreach($_POST[$index] as $key => $val)
                {                    
                    $_POST[$index][$key] = $this->xss_clean($val);
                }
            }
            else
            {
                return $this->xss_clean($_POST[$index]);
            }
        }

        return $_POST[$index];
    } 

        /**
         * Fetch an item from the COOKIE array
         *
         * see post method
         */
        function cookie($index = '', $default = FALSE, $xss_clean = FALSE)
    {
        if ( ! isset($_COOKIE[$index]))
        {
            return $default;
        }

        if ($xss_clean === TRUE || ($this->use_xss_clean === TRUE && $xss_clean !== FALSE))
        {
            if (is_array($_COOKIE[$index]))
            {
                $cookie = array();
                foreach($_COOKIE[$index] as $key => $val)
                {
                    $cookie[$key] = $this->xss_clean($val);
                }
        
                return $cookie;
            }
            else
            {
                return $this->xss_clean($_COOKIE[$index]);
            }
        }
        else
        {
            return $_COOKIE[$index];
        }
    }

}