PHP Session with an Incomplete Object -

I am getting an error I do not know how to do it right, so I wonder if I can get some help .

This error is

  Fatal error: process_form () [& lt; A href = 'function.process-form' & gt; Function.process-form & lt; / A & gt;]: The script tried to execute a method or use the property of an incomplete object. Please make sure that the class definition & amp; Quot; Template & quot; The object you are trying to work on was loaded _before_ unserialize () to light 44 / <> 
 I get this error in the process_form () function. So what do I get from this point of thinking, I did not load the class for the template. Include what I actually did on the top 'inc / item.class.php'; Do I have to re-add it to the function?  
 There is a code for a special page with error, you can see that I have everything like it should be. Where did I go wrong?  
  & lt ;? Includes Php 'inc / prep.php'; Include 'inc / header.class.php'; Include 'inc / item.class.php'; Include 'inc / template.class.php'; Include 'inc / formhelper.class.php'; Include 'inc / formvalidator.class.php'; Include_once ('inc / config / config.php'); Include_once ('inc / DBE.class.php'); Include_once ('inc / GenFuncs.php'); Include_once ('inc / Search.class.php'); Session_start (); // Verify that the user is logged in. VerifyLogin ($ _ SERVER ['PHP_SELF'] "?" $ _SERVER ['QUERY_STRING']); If (array_key_exists ('_ submit', $ _ POST)) {if ($ fv_errors = validate_form ()) {show_form ($ fv_errors); } And {process_form (); }} Else {// Form was not submitted or preview was selected, so display show_form (); } Function validate_form () {} function process_form () {global $ mysqli; Echo var_dump ($ _ session); $ Template = $ _SESSION ['Template']; $ Template-> Name = $ _POST ['name']; $ Template-> Descript = $ _POST ['descript']; $ Template-> User = $ _SESSION ['user']; $ Template-> Customer = $ _SESSION ['CustID']; $ Template-> Status = $ _POST ['status']; $ Template & gt; Insert (); // headers ("location: template.php"); }   
 
 
 This is not a serialize / unassignment of your template class.  
 Take a look here for one, I gave your second question.  
 For example, you might want to:  
   
 
 and 
 
  & lt; Php $ template = unserialize ($ _ session ['template']); ? & Gt;  
 
 Edit: 
 
 It shows a hint after reading your comment about going upstairs. 
 
 When you call, the automatic serialization / unserialization happens  session_start () . 
 This means that you include your files and calling  session_start ()  is very important. 
 
 For example: 
 
 This would be wrong: 
 
   
 
 However this would be true: 
 
   
 
 Now, in my example, I see that it is in the right order, but I note that you include many others before adding template.class.php < / P> 
 It is possible that one of these (probably prep.php or header.class.php) calls  start_session () ? 
 If so, this was your problem ( session_start ()  is being called before your template.class.php.)