title: how can I get ID3 tags of my mp3 file with php?
body: <p>I'm surprised not to find more questions about it, I might be the one on stackoverflow. How do I need to go to extract ID3 basic tags of one mp3 file with php ?
  Without downloading any librairies (I just want a neat function that returns an associative array key=a string that specifies the tag, value=a string that specifies the value of the tag).</p>
  
  <p>I found many ways to do it but all require to download libraries with many functions that I don't need necessarily.</p>
  
  <p>I don't want kiddyscripting.
  I want to build this function using fopen and reading the first bytes of the file according to the length of each tags (reading in the rfc).</p>
  
  <p>Which functions will I need to use to get the bits (or the bytes converted in bits) ? But not the characters which are in the mp3, cause of course they are not text file.</p>