Description:
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When I upgraded to 4.3.10 from 4.3.9, every piece of code on my site that used foreach() broke.  As near as I can tell, in foreach($array as $value), $value wasn't being set.  I uninstalled 4.3.10 and reinstalled 4.3.9 and it works beautifully again.  I used the same php.ini all three times.

Reproduce code:
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<?php
$test_arr = array(1,2,3,4,5);

foreach($test_arr as $number) {

   echo $number;

}
?>

Expected result:
----------------
It should print:

12345

Actual result:
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It prints nothing, and isset($number) returns FALSE.