Description:
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Classes are defined in the file class.php. The class bar contains only one scalar property. The class foo contains three properties : an instance of the class bar, an array and a scalar property. 

In index.php, an instance of foo is stored in a session variable. Then the print_r function is called to display this variable's content. 
There isn't any bug at this point yet. 

By clicking on 'continue', you open the next file : verification.php. There, the print_r function is called again. 
As you can see, the content of the non-scalar properties of foo is lost. 

This is different from the behaviour of php versions until 5.0.5. 



Reproduce code:
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www.cardinaux.info/session_problem_with_php_5_1_2_dev.zip

Expected result:
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Verification.php should output : 

Foo Session Variable :
foo Object ( [_bar:private] => bar Object ( [_value:private] => 54321 ) [_names:private] => Array ( [0] => Boat [1] => Airplane [2] => Car ) [_value:private] => 1500 )


Actual result:
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Verification.php outputs : 

Foo Session Variable :
foo Object ( [_bar:private] => [_names:private] => [_value:private] => 1500 )