<?php
error_reporting(0);
$url=file_get_contents('https://m.9ku.com/play/'.$_GET['id'].'.htm');
preg_match_all('#meida([^>]+)mp3:"([^>]+)"#',$url,$mp3s);
$mp3 = $mp3s[2][0];
header("Content-Type: application/force-download");
header("Content-Disposition: attachment; filename=音乐");
readfile($mp3);
?>