function getecho($echo) {
		$echofile=explode("\n", file_get_contents("echo/".$echo));
		array_pop($echofile);
		return $echofile;
}
$blacklist=explode("\n", file_get_contents("./blacklist.txt"));
array_pop($blacklist);
$echolist=scandir("echo/");
$echos=[];
foreach($echolist as $echofile) {
	if($echofile!="." && $echofile!="..") {
		$echos[]=$echofile;
	}
}
foreach($echos as $echo) {
	$msgids=getecho($echo);
	foreach($blacklist as $blackmsg) {
			$key=array_search($blackmsg, $msgids);
			if($key!=false) {
				unset($msgids[$key]);
				echo "deleted msgid ".$blackmsg." from echo ".$echo."\n";
			}
	}
	$msgids=array_values($msgids);
	echo "resaving echo ".$echo." to base\n";
	file_put_contents("echo/".$echo, implode("\n", $msgids)."\n");
}
foreach($blacklist as $blackmsg) {
	if(file_exists("msg/".$blackmsg)) {
			echo "removing file ".$blackmsg." from base\n";
			unlink("msg/".$blackmsg);
	}
}