<?php

class FileManager
{
  var $FileName;
  var $FileType;

  function checkType()
  {
    if($FileType == $this -> FileType)
      return true;
    else
      return false;
  }

  function deleteFile()
  {
  }

  function createFile()
  {
    if($this -> checkType()) echo "It Works!";
    else echo "What the hell?";
  }

  function editFile()
  {
  }
}

$File = new FileManager();

$File -> $FileType = "txt";
$File -> createFile();