Re: How is NULL stored?
| From: | Jeroen Timmers | Date: | Mon, 11 Feb 2002 12:09:20 +0000 |
| Subject: | Re: How is NULL stored? | ||
| References: | 1 | Groups: | php.db |
| Request: | Send a blank email to php-db+get-16788@lists.php.net to get a copy of this message | ||
> When I use phpMyAdmin to view data, where values are NULL it displays the
> word 'NULL'. Does this mean that the word 'NULL' is actually stored in the
> table, or is it defined by some other character? Is this any different
from
> an empty value?
>
> I am using it to check to see whether a value has been entered into a
field,
> and if so what is the value. Will MySql return an empty string or do I
need
> to trap for 'NULL' as well?
>
NULL is empty
if you make this statement with php you can test it
if (empty($var)) echo "NULL"; else echo $var;
Jeroen