How to clear the cache in Typo3 from an external script?

I do have a PHP script, which is not an extension for Typo3. Now I would like to delete the whole Cache of Typo3 out of this script. How is that possible?

I found the solution myself and its actually pretty easy. I took a look into the class.t3lib_tcemain.php in the t3lib folder. There you've got the necessary commands to clear the cache. It also checks, if you have the cachingframework enabled. If so, you need to truncate a few other tables as well (Starts with cachingframework_cache_)

It is basically:

<?php

 require_once('./typo3conf/localconf.php');

 $conn = mysql_connect($typo_db_host, $typo_db_username, $typo_db_password);
 mysql_select_db($typo_db);

 // Clear Cache here
 mysql_query("TRUNCATE cache_treelist;");
 mysql_query("TRUNCATE cache_pagesection;");
 mysql_query("TRUNCATE cache_hash;");
 mysql_query("TRUNCATE cache_pages;");
 if($handle = opendir('./typo3conf')) {
    while (false !== ($file = readdir($handle))) {
        if(strpos($file, 'temp_CACHED_')!==false) {
            unlink('./typo3conf/'.$file);
        }
    }
    closedir($handle);
 }

?>