Maybe first table PHP functions comparison (including 'isset' and 'empty') 
could help you.

31.03.2013 в 8:53, John Taylor-Johnston написал(а):
> I'm using

if($mydata->>DPRresponselocationaddress1 != "")

> is this the same as

if (!isset($mydata->>DPRresponselocationaddress))

> or

if (!empty($mydata->>DPRresponselocationaddress))

> or is there another function I have not learned yet? I don't really get 
> the difference between isset and empty.

> John

С уважением, Александр Меньщиков

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