Php Data is transmitted as a stream

Php files are transmitted as Streams & nbsp; scenario: & nbsp; the client obtains the mp3 files played on the server, however, the client cannot write files or download files for some reason. & Nbsp; the current idea is to transfer files in the form of streams in p php.
Scenario:
The client obtains the mp3 file on the server for playing, but the client cannot write the file or download the file for some reason.
The idea is to use fopen-> fread-> echo on the php end to read the mp3 buffer into the memory. the client receives the buffer and stores it in the memory, and then plays the sound in the memory.

Problem:
Now there is a 5143-byte Mp3 on the server, but the client only receives 5042. some characters have been escaped during the test. I have found many methods on the internet and it seems that I can't even use them. php has just learned how to prevent him from escaping to get the correct file buffer.
File Stream transmission and sharing :? Fread? -> E... 'data-pics = ''>
------ Solution --------------------
Use 'RB' to open fopen
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Yge. me/xx133/index. php

Index. php
Header ("Location: http://yge.me/x.mp3 ");
// All URL addresses of MP3.
// X.mp3 is a real file
?>
------ Solution --------------------
1. use echo file_get_contents ('filename '). you do not need to consider other issues.
2. use readfile ('filename '). you do not need to consider other issues.
3. whether the client can write files is not managed by the server.
------ Solution --------------------
I have a question, isn't your php sending a header? What header?