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Re: evaluating a null value in an array [message #173833 is a reply to message #173832]

Sat, 07 May 2011 16:34

Gregor Kofler
Messages: 69
Registered: September 2010

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Am 2011-05-07 17:30, Denis McMahon meinte:
> On Sat, 07 May 2011 07:27:21 -0400, bill wrote:
>
>> a suggestion on how to evaluate this value.
>
> if (
> !(isset($insInfo[3])) // $insInfo3 not defined
> || (is__null($insInfo[3])) // $insInfo3 defined and null

Not necessary.

isset() also returns false when the tested variable is set to NULL [1].

$bar = NULL;
var_dump(isset($foo)); // FALSE
var_dump(isset($bar)); // FALSE

Gregor

[1]
http://php.net/manual/de/function.isset.php

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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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