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To: "Eloy Bote Falcon" <eloybote@gmail.com>
Cc: "internals@lists.php.net" <internals@lists.php.net>, "Ben Schmidt"
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Date: Thu, 14 Apr 2011 12:16:43 +0200
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Subject: Re: [PHP-DEV] Implicit isset/isempty check on short-ternary operator
From: olemarkus@olemarkus.org ("Ole Markus With")

On Thu, 14 Apr 2011 10:59:41 +0200, Eloy Bote Falcon <eloybote@gmail.com>  
wrote:

> What is the purpose of that generateHash function? It doesn't work in the
> isset check.
>

Instead of using a multi-dimensional array, I use a flat array.

> Anyway, you can do a simple $a = array('foo'); isset($a[$x][$y][$z])  
> without
> notices at all unless any of $x $y or $z are not defined, you don't need  
> to
> check the indexes one by one.
>

Well, the example was just for brevity. If you want a full-blown example:

if (!isset($a[$x])) {
  $a[$x] = array();
}

if (!isset($a[$x][$y])) {
  $a[$x][$y] = array();
}

if (!isset($a[$x][$y][$z])) {
  $a[$x][$y][$z] = array();
}

$a[$x][$y][$z] = 1;


Hope this clarifies.


-- 
Ole Markus