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NULL is driving me nuts!

Posted on 2009-07-03
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Last Modified: 2013-12-13
In my database, these three fields are defined as SMALLINT:
phone2_ac, phone2_ex, phone2_num

When inserting a recored into the database, I found that if my form fields for these were blank, this was what I had to do:
$phone2ac = 'NULL';
$phone2ex = 'NULL';  //if field is text, then you don't use the quotes
$phone2num = 'NULL';
I then used $phone2ac, $phone2ex, and $phone2num in my INSERT statement. If I omitted the quotes from 'NULL', I got an error on the insert.
My insert was like this:
INSERT INTO tblmine phone2_ac, phone2_ex, phone2_num VALUES ($phone2ac, $phone2ex, $phone2num);

All fine so far. In my database, the values are NULL.

Now, I do this:

if (!is_null($phone2ac) || !is_null($phone2ex) || !is_null($phone2num))  {
      $body .= "Other Phone: " . $phone2ac . "-" . $phone2ex . "-" . $phone2num . "\n"; }

When all three fields are null, $body is getting set. I do not understand why?

It's been a long day ...
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Question by:alicia1234
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2 Comments
 
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Accepted Solution

by:
pmessana earned 500 total points
ID: 24775271
The problem is that the values are not null, you set them to word "NULL", you didn't set the variables NULL.

You could do this:

if ($phone2ac!='NULL') || l($phone2ex!='NULL') || l($phone2num!='NULL'))  {
      $body .= "Other Phone: " . $phone2ac . "-" . $phone2ex . "-" . $phone2num . "\n"; }
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Author Comment

by:alicia1234
ID: 24775314
Thanks, that worked.



if ( $phone2ac != 'NULL' || $phone2ex != 'NULL' || $phone2num != 'NULL' )  {
	$body .= "Other Phone: " . $phone2ac . "-" . $phone2ex . "-" . $phone2num . "\n"; }

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