passing param

[jammer]

hello i have a question about passing parameters

 

When i do

 

$param = array_merge( $_GET, $_POST)

 

some say it is ok to pass just $param while i heard i shouldn't do this

 

example

 

say i have an int(ID) and a decimal(price) stored in a DB and i call a function Product::updatePrice($param);  To update the price is it ok to do this?

 

someone told me i should do Product::updatePrice(intval($param["id"],  and so on);

 

I guess my problem lies where it works when i do Product::updatePrice($param);

 

but i can't get it to work when i do it Product::updatePrice(intval($param["id"],  and so on);