Re: evaluating a null value in an array

From	Gregor Kofler <usenet@gregorkofler.com>
Newsgroups	comp.lang.php
Subject	Re: evaluating a null value in an array
Date	2011-05-07 18:34 +0200
Organization	A noiseless patient Spider
Message-ID	<iq3saq$gre$1@dont-email.me> (permalink)
References	<5uWdnXAptq8EsVjQnZ2dnUVZ_sidnZ2d@cablespeedmi.com> <4dc5658b$0$31951$bed64819@gradwell.net>

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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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evaluating a null value in an array bill <nobody@spamcop.net> - 2011-05-07 07:27 -0400
  Re: evaluating a null value in an array Jerry Stuckle <jstucklex@attglobal.net> - 2011-05-07 07:36 -0400
    Re: evaluating a null value in an array Gregor Kofler <usenet@gregorkofler.com> - 2011-05-07 18:35 +0200
      Re: evaluating a null value in an array dougatmilmacdotcom@example.com (Doug Miller) - 2011-05-07 23:46 +0000
      Re: evaluating a null value in an array Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2011-05-08 13:56 +0200
        Re: evaluating a null value in an array Gregor Kofler <usenet@gregorkofler.com> - 2011-05-08 20:18 +0200
    Re: evaluating a null value in an array bill <nobody@spamcop.net> - 2011-05-07 13:50 -0400
  Re: evaluating a null value in an array Denis McMahon <denis.m.f.mcmahon@gmail.com> - 2011-05-07 15:30 +0000
    Re: evaluating a null value in an array Gregor Kofler <usenet@gregorkofler.com> - 2011-05-07 18:34 +0200

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