title: Open a 2GB xml file to understand the structure
body: <p>OPEN NOT PARSE</p>
  
  <p>I work with icecat xml files.
  the current xml file is over 2GB. ( i have another one that is over 4GB )
  There is nothing i am aware of to open it or read it.</p>
  
  <p>I need to know the structure of the file so i can prepare my database.
  unfortunately there is lack of documentation on icecat.</p>
  
  <p>I prefer php and mysql to parse the data to a database.
  The point is to get it read first to know the elements and it's attributes.
  I simply do not know what is inside this huge file.</p>