Description:
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Object variables with numbers as name are not public after unserialize.
So i.e. get_object_vars() doesn't return this vars because they are not public

Test script:
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<?php

$a = new stdClass;
$varname = '1';
$a->$varname = 1;
$a->test = 1;

var_dump($a);
print_r($a);
echo '<hr/>';

$s = serialize($a);
$a2 = unserialize($s);

var_dump($a2);
print_r($a2);
echo '<hr/>';

var_dump(get_object_vars($a2));
print_r(get_object_vars($a2)); 

Expected result:
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Such vars should be public after unserialize.

Actual result:
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Vars are not actually public.