Description:
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Integers or floats bigger than 2 to the power 32 result in an overflow and dont work as expected. See the code below.

Reproduce code:
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not working:
echo json_encode ( array ( 'number' => pow ( 2, 32 ) ) );
echo json_encode ( array ( 'number' => (int) pow ( 2, 32 ) ) );
echo json_encode ( array ( 'number' => (float) pow ( 2, 32 ) ) );

working:
echo json_encode ( array ( 'number' => (string) pow ( 2, 32 ) ) );

Expected result:
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not working:
{"number":0}

working:
{"number":"4294967296"}