title: Get the variable from where a property was called
body: <p>For some user-level debugging I would like to know from which variable a certain property from a class was called. All classes are <code>stdClass</code>, so I can't look for an answer in that direction.</p>
  
  <p>Let's say I have a class <code>Person</code> with properties <code>Name</code> and <code>Sex</code>. The setup looks like <code>$oPerson = new Person()</code>. When I call <code>$oPerson-&gt;FirstName = 'Jack';</code> I would like to figure out the call was made from <code>$oPerson</code>. Can this be achieved?</p>