Php que chama um canal de uma lista m3u

<?php
header ("HTTP/1.1 206 Partial Content");
header ("Connection: close");
header ("Content-Type: text/plain");

function search($target, $start, $end){
$start_at  = strpos($target, $start) + strlen($start);
$target = substr($target,$start_at);
$end_at = strpos($target, $end);
return substr($target, 0, $end_at);
}

$chan = $_GET['n'];
$was = file_get_contents("https://johantv-streams.000webhostapp.com/johantv.m3u");

$line = explode(chr(10), $was);
$total = count($line) - 1;
for ($x = 0; $x < $total; $x++) {
    if (strpos($line[$x], $chan) !== false) {
        $chan = search($line[$x], ",", chr(13));
        break;
    }
}

$look = search($was, $chan.chr(13).chr(10), chr(13).chr(10));
header ("Location:". $look);
?>

#EXTM3U
#EXTINF:-1,ESPN
http://ligatv.net:25461/live/televall/norobarass/229.m3u8
#EXTINF:-1, FOXSP1
http://ligatv.net:25461/live/televall/norobarass/232.m3u8
#EXTINF:-1, FOXSP2
http://ligatv.net:25461/live/televall/norobarass/233.m3u8

https://johantv-streams.000webhostapp.com/canal.php?n=ESPN&f=.m3u8

http://ligatv.net:25461/live/televall/norobarass/229.m3u8