title: How can i read .xls files (Excel) with PHP?
body: <p>I need to convert an .xls file to text, i dont need it formatted in any way.
  The file is filled with productids like PN-5098P, which i will preg_match_all to get.</p>
  
  <p>What is the simplest solution?
  I tried simply opening the file in a regular texteditor, the ids are not showing, so i guess i need some kind of binary converter?</p>