Description:
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In PHP 5.3 (and probably 5.2x as well) a division by Zero returns null and 
squelches a warning.  The issue becomes when the return is cast to Int as is done 
via soap service which is where I discovered this issue.

Test script:
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<?PHP
$val = 5/0;
echo (int)$val;

Expected result:
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Fatal Error: Division by zero in /var/www/reproduction/test.php on line 3

Actual result:
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Warning: Division by zero in /var/www/reproduction/test.php on line 3
int(0)