<?php
    
    /**
     * This file is part of the PHP Video Toolkit v2 package.
     *
     * @author Oliver Lillie (aka buggedcom) <publicmail@buggedcom.co.uk>
     * @license Dual licensed under MIT and GPLv2
     * @copyright Copyright (c) 2008-2014 Oliver Lillie <http://www.buggedcom.co.uk>
     * @package PHPVideoToolkit V2
     * @version 2.1.7-beta
     * @uses ffmpeg http://ffmpeg.sourceforge.net/
     */
     
    namespace PHPVideoToolkit;
    
    /**
     * @access public
     * @author Oliver Lillie
     * @package default
     */
    class Str
    {
        /**
         * Generates a random string.
         *
         * @access protected
         * @author Oliver Lillie
         * @return string
         */
        public static function generateRandomString()
        {
            return (rand(10000, 99999).'_'.self::generateRandomAlphaString(5).'_'.time());
        }
        
        /**
         * Generates a random alphanumeric string.
         *
         * @access public
         * @author Oliver Lillie
         * @param integer $length 
         * @return string
         */
        public static function generateRandomAlphaString($length) 
        {
            $characters = 'abcdefghijklmnopqrstuvwxyz0123456789';
            $randomString = '';
            for ($i = 0; $i < $length; $i++)
            {
                $randomString .= $characters[rand(0, strlen($characters) - 1)];
            }
            return $randomString;
        }
        
    }
