friendica-github/include/dbupdate.php

<?php

require_once("boot.php");

function dbupdate_run(&$argv, &$argc) {
	global $a, $db;

	if(is_null($a)){
		$a = new App;
	}
  
	if(is_null($db)) {
		@include(".htconfig.php");
		require_once("include/dba.php");
		$db = new dba($db_host, $db_user, $db_pass, $db_data);
		        unset($db_host, $db_user, $db_pass, $db_data);
	}

	load_config('config');
	load_config('system');

	update_db($a);
}

if (array_search(__file__,get_included_files())===0){
  dbupdate_run($argv,$argc);
  killme();
}