Re: How to output a NULL field?

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Shawn McKenzie wrote:
 > First off, if the value is NULL in the database then in PHP it will be
> the string "NULL" and not a null value as far as I remember.  Second,
> you cant use a function/method in empty().  Thirdly, the string "NULL"
> is not empty.  I'm not sure what DB class you're using here or what the
> Fields() method actually returns.  You should do a
> var_dump($rs->Fields(22)) to see. If it returns a string (especially
> "NULL"), then this or some variation should work:
> 
> $q4 = $rs->Fields(22);
> 
> if($q4 == "NULL"){
> 	$q4 = "";
> }
> 
> If it returns an empty string or false then you may have nothing to do.
> 
DOH! My bad.  MySQL stores an empty value based upon the field type for
NULL.  So if the field type is int then it sets it to 0 and if its
varchar, etc, it sets it to an empty string "".  The MySQL functions
seem to return everything as a string, so for an int field it returns
the string "0", so:

$q4 = $rs->Fields(22);

if(empty($q4)){
	$q4 = "";
}

But I'm not sure what benefit you get from this except that "0" is
changed to "".

-- 
Thanks!
-Shawn
http://www.spidean.com

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