function findBest($url) {
    if(stristr($url,"http")) {
        $p = parse_url($url);
        $url = $p['path'];
    }

    $s = "sitemap.xml";
    for($i=0;$i<10;$i++) {
        if(file_exists($s)) { } else { $s = "../$s"; }
    }

    $data = file_get_contents($s);
    $locs = getMultiMatch("<loc>","</loc>",$data);
    foreach($locs as $loc) {
        if(stristr($loc,"http:")) { $p = parse_url($loc); $loc = $p['path']; }
        $l = levenshtein($url,$loc);
        $results[$loc]=$l;
    }
    asort($results);
    foreach($results as $k=>$v) {
        $correct = $k;
        $score = $v;
        break;
    }
    if($score<3) {
        return $correct;
    } else {
        return false;
    }
}

function getSingleMatch($start,$end,$content) {
    $exp = explode($start,$content);
    $exp2 = explode($end,$exp[1]);
    return $exp2[0];
}


function getMultiMatch($start,$end,$content) {
   $exp = explode($start,$content);
   for($i=1;$i< count ( $exp );$i++) {
       $exp2 = explode($end,$exp[$i]);
       $arr[] = $exp2[0];
   }
   return $arr;
}

$correct = findBest($_SERVER['REQUEST_URI']);

if($correct!=false) {
    header("HTTP/1.1 301 Moved Permanently");
    header("Location: $correct");
    exit;
}