PHP and Unix tips

	 $username = "username";
	 $password = "password";
	 $repository = "http://google-web-toolkit.googlecode.com/svn/trunk/";
	 $destination = 'your/full/path';

	 $checkout = "svn export --force --username $username --password $password $repository $destination";
	 $result = _exec($checkout);

	function _exec($cmd)
	{
	    if (substr(php_uname(), 0, 7) == "Windows") {
	        pclose(popen("start /B ". $cmd, "r"));
	    } else {
	        exec($cmd . " > /dev/null &");
	    }
	}