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假如现在有大量的MP3链接，,需要用PHP下载链接的mp3文件，怎么实现
<?php
$cont=fopen('http://www.niutw.com/71cd8c4b7576a9601f953d21d8a973b8.mp3','r');
$fcontent = fread($cont, filesize('http://www.niutw.com/71cd8c4b7576a9601f953d21d8a973b8.mp3'));
fclose($cont);
//发送mp3文件MIME 头
header('Content-Type: audio/mp3');
// 发送下载附件头.
header("Content-disposition: attachment; filename="test.mp3"");
header('Content-transfer-encoding: binary');
echo $cont;
exit;
?>