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To: "Martin Scotta" <martinscotta@gmail.com>
Cc: RQuadling@googlemail.com, "Richard Quadling" <rquadling@gmail.com>, "Eloy
 Bote Falcon" <eloybote@gmail.com>, "Ben Schmidt"
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Date: Thu, 14 Apr 2011 18:20:05 +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 15:25:45 +0200, Martin Scotta <martinscotta@gmail.com>  
wrote:

> arrays are intent for holding values, not for represent things so use
> objects for that.
> the need for array_key_exists/isset to check for the presence of an  
> index is
> a smell that you need to refactor your code for a different datatype.
>

There is quite a difference in performance between using an array  
representation of data structures such as graphs, matrices, etc and using  
an OO representation. Also with the inclusion of closures it is possible  
to write very elegant code using arrays and array functions such as  
array_walk, array_map etc. If the multi-dimensional array is sparse, you  
cannot really avoid a lot of isset calls.

Also, if you want to output everything as json in the end, working on  
arrays is very natural.

-- 
Ole Markus