[PHP] Query from POST_VARS

[chris allen]

Question on a mysql insert query:

        while(list($key, $val) = each($HTTP_POST_VARS)) {
                
                $string .= "'". $val ."'" .",";
                }
                
$insert_query = "insert into data_16 values ('$string')";


Do I need the single quotes for data being put into table? 
Ex:

$insert_query =('data' , 'data2', 'data3') etc....

or can it be without the single quotes?
as in 

(data, data2, data3)  ???

As far as I understand I only need quotes here:

$insert_query = "insert into data_16 values ('$string')";
                                                                   ^      ^


Am i right??


thanks
-ccma


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