title: Return message if reading an empty file
body: <p>I am using PHP Excel library. I want to show a error message to the user when user uploads an empty file for reading. I google'd for it but couldn't get relevant answer.</p>
  
  <p>When a new excel file is created it has a default filesize of 9KB in windows. I cannot use filesize() to check for emptyness as suggested by some of the post here.</p>
  
  <p>Is there any way using PHP Excel to check if the file is empty and return error message??</p>