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Re: evaluating a null value in an array [message #173827 is a reply to message #173825]

Sat, 07 May 2011 11:36

Jerry Stuckle
Messages: 2598
Registered: September 2010

Karma:

Senior Member

On 5/7/2011 7:27 AM, bill wrote:
> I have an array of values, one of which might be null.
>
> This statement fails
> if ( ($dos <= $insInfo[3]) or($dos == '0000-00-00'))
>
> with the error:
> Notice: Undefined offset: 3 in /var/www/MP2010-v2/classes/cDollar.php on
> line 237
>
> when $insInfo[3] is NULL.
>
> I figured I could shortcut the evaluation with:
>
> if ( ( is_null($insInfo[3])) or($dos <= $insInfo[3]) or($dos ==
> '0000-00-00'))
>
> but I get the same error.
>
> I sure would appreciate:
> knowing why I get the error, and
> a suggestion on how to evaluate this value.
>
> bill

Is it null, or is it not set? There is a difference!

Try isset() instead of is_null().

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Jerry Stuckle
JDS Computer Training Corp.
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[Message index]

		evaluating a null value in an array By: bill on Sat, 07 May 2011 11:27
		Re: evaluating a null value in an array By: Jerry Stuckle on Sat, 07 May 2011 11:36
		Re: evaluating a null value in an array By: Gregor Kofler on Sat, 07 May 2011 16:35
		Re: evaluating a null value in an array By: dougatmilmacdotcom on Sat, 07 May 2011 23:46
		Re: evaluating a null value in an array By: Thomas 'PointedEars' on Sun, 08 May 2011 11:56
		Re: evaluating a null value in an array By: Gregor Kofler on Sun, 08 May 2011 18:18
		Re: evaluating a null value in an array By: bill on Sat, 07 May 2011 17:50
		Re: evaluating a null value in an array By: Denis McMahon on Sat, 07 May 2011 15:30
		Re: evaluating a null value in an array By: Gregor Kofler on Sat, 07 May 2011 16:34

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