title: Highcharts export charts as image on serverside with php
body: <p>I've searched on the web for my problem and I found some solutions talking about phantomjs or batik. I tried to use these methods but i failed.
  I think it's because i didn't understand very well what I have to do.</p>
  
  <p>Can someone please explain me clearly and step by step what do I have to do ?</p>