title: Compare two word or excel or power point documents 2007 using PHP or Javascript programatically
body: <p>Following are some requirements for my new project.</p>
  
  <p>Admin will upload a file which will be in format of Ms Word 2007 or Ms Excel 2007 or Ms Power Point 2007.</p>
  
  <p>Lets say that admin has uploaded a file named demo1.docx file.</p>
  
  <p>Now demo1.docx is a master file. </p>
  
  <p>Now other users will upload their own files like demo2.docx, demo3.docx etc.</p>
  
  <p>I want to compare demo2.docx and demo3.docx files with master file demo1.docx.</p>
  
  <p>Files uploaded by other users must be copy of the master file. I mean number of characters, text, formatting have to be same as the master file.</p>
  
  <p>If it is excel file, then number of sheets, no. of cells filled have to be same and same thing apply to power point files.</p>
  
  <p>I want to do this using PHP or Javascript.</p>
  
  <p>So can u please tell me if it is possible or not? and if it is possible then suggest me some ways to accomplish this task.</p>
  
  <p>Thanks in advance.</p>