CodeIgniter Hash Helper

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

/**
 * Hash Helper
 *
 * @package     CodeIgniter
 * @subpackage  Helpers
 * @category    Hash Helper
 * @author      Kader Bouyakoub <bkader@mail.com>
 * @link        @KaderBouyakoub
 *
 */

if ( ! function_exists('generate_salt'))
{
    /**
     * Generate a random SALT
     *
     * @access  public
     * @param   integer
     * @return  string
     */
    function generate_salt($length = 8)
    {
        if ($length > 32) $length = 32;
        return substr(md5(microtime()), 0, $length);
    }
}

if ( ! function_exists('hash_password'))
{
    /**
     * Hash a password
     *
     * @access  public
     * @param   string
     * @param   string
     * @return  string
     */
    function hash_password($password, $salt)
    {
        // Make sure you use your own method and
        // KEEP IT SECRET ;)
        return md5(md5($salt.':'.md5($password)));
    }
}

if ( ! function_exists('check_password'))
{
    /**
     * Compare between two password
     *
     * @access  public
     * @param   string
     * @param   string
     * @param   string
     * @return  boolean
     */
    function check_password($password, $salt, $hashed)
    {
        $_hased = hash_password($password, $salt);
        return $_hased === $hashed;
    }
}

/* End of file hash_helper.php */
/* Location: ./application/helpers/hash_helper.php */