PHP重定向-标头-不工作

我想重定向到http://www.jango.com/music/$artist/$song/video?l=0，其中$artist和$song有望是最常见的组合，从一个文件中提取，其内容如下：

MONSTER,PARAMORE
MONSTER,PARAMORE
DARK HORSE,KATY PERRY

因此，对于该示例文件，URL应该是：

http://www.jango.com/music/PARAMORE/MONSTER/video?l=0

这是代码：

<?PHP
$pin = $_GET["pin"];
//LOAD THE VOTES FILE
$arraypos = 0;
$concat=array("");
$file_handle = fopen("../users/" . $pin . "/votes.php", "r");
while (!feof($file_handle)) {
   $line = fgets($file_handle);      
   $linelength =  strlen($line);
   $concat[$arraypos]=($line);
   $arraypos = ($arraypos + 1);
}
fclose($file_handle); 
//get all the frequencies
$frequencies = array_count_values($concat);
//make sure to sort it since array_count_values doesn't return a sorted array
arsort($frequencies);
//reset the array because you can't trust keys to get the first element by itself
reset($frequencies);
//get the first key
$winner = key($frequencies);
//find position of ,
   $positionofcomma = strpos($winner , ",");
   //dump left of , to songs
   $song = substr($winner , 0 , $positionofcomma);
   //dump right of , to artists
   $artist= substr($winner , $positionofcomma + 1); 
//refine for redirection
$find=" ";
$replace="+";
$song = str_replace ( $find , $replace , $song );
$artist = str_replace ( $find , $replace , $artist);
$search="Location: http://www.jango.com/music/$artist/$song/video?l=0";
   header($search);
?>

我已经试着让它发挥作用好几个小时了，我真的很累了。我不知道哪里出了问题。这可能只是一个愚蠢的错误。。。。

我知道它完美地获得了$search，只是不会重定向到它。