title: Convert higher bitrate mp3 files to lower bitrate in PHP
body: <p>I developed a system that contains many MP3 files that users can listen to them online/stream, since most of my users are Iranians and Iran internet speed is sucks, I came up with an idea, but I can’t find the right/best way to do that.</p>
  
  <p>I have alots of different berates: <code>128kps</code>, <code>192kps</code>, <code>320kps</code>, etc… I would like to know what’s the best way  to remotely convert these files to <code>32</code>/<code>64kps</code> qualitie, and of course, temporarily.</p>
  
  <p>I mean, after the new file <code>32kbps</code> generated. After period of time the generated file automatically delete.</p>
  
  <p>I did lots of search before I ask this question, but none of the results answered my question.</p>
  
  <p>BTW, I find the <code>LAME</code> library.</p>
  
  <p>Is there a way to do that with pure <code>PHP</code>?</p>