php - Call a member function on a non object

i want to display informations about object Activity that the function getCurrent() from the ListActivity should returns.
When i try it, it works perfectly, i have the information needed from the class, but, i have this error message on the top of the page :

Fatal error: Call to a member function getIdentifiant() on a

non-object in
/Applications/XAMPP/xamppfiles/htdocs/site/prototype/administration.php
on line 34

Line 34 is here :

  while($listActivities->next())
  {
     $current = new Activity();

     $current = $listActivities->getCurrent();
     echo $current->getId(); // line 34
  }

And this is the getCurrent() function which return an Activity object.

  public function getCurrent()
  {
     if(isset($this->activities[$this->current]))

        return $this->activities[$this->current];
  }

I don't understand why i have this problem since it returns me the object that i want.
Please help me figuring it out. Thanks.

Answer

echo $current->getId(); // line 34
Fatal error: Call to a member function getIdentifiant() on a non-object in /Applications/XAMPP/xamppfiles/htdocs/site/prototype/administration.php on line 34

WhatEVER you think happens, or whatEVER you see in your page, if the error says $current is not an object, it is not. It might not be null, but it could also be an array or anything that is not an object.

Also :

$current = new Activity();
$current = $listActivities->getCurrent();

Doesn't really makes sense to me.

Use

var_dump($listActivities->getCurrent());

To see what it exactly returns, and trust what errors say.

EDIT : And you may not even be looking at the right php script acually : The error says "getIdentifiant" while the code says "getId". Make sure you're looking at the right piece of code and refreshing the right page.