Re: A little confusing thing on (mistakenly) geting a offset from string with multi dim index.

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On 05/15/2014 09:26 AM, Ford, Mike wrote:
-----Original Message-----
From: Jim Lucas [mailto:lists@xxxxxxxxx]
Sent: 15 May 2014 16:47
To: php-general@xxxxxxxxxxxxx
Subject: Re:  A little confusing thing on (mistakenly) geting a
offset from string with multi dim index.

On 05/14/2014 05:55 PM, Rain Lee wrote:
So, here is the TLDR;

$string = 'this is a string';

In PHP 5.5
isset($string['check']) === false
isset($string['check'][0]) === true

Why can't let
isset($string['check']) === false
isset($string['check'][0]) === false <--

?


I can see WHAT you are doing and WHAT the results are, but I don't
understand
WHY would you ever do this?

You defined $string with a string of characters.  But you are trying
to use
$string as an array.  This hits me as completely wrong.

That's a perfectly normal PHP idiom to get the nth character of the
string, I do it all over the place - $string[$n] is equivalent to
substr($string, $n, 1);


You are pulling data from a string using a method that is perfectly valid.

He is testing for something.  Not the same thing.


Cheers!

Mike

--
Mike Ford,
Electronic Information Developer, Libraries and Learning Innovation,
403a Leslie Silver Building, City Campus, Leeds Metropolitan University,
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E: m.ford@xxxxxxxxxxxxxx     T: +44 113 812 4730






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--
Jim Lucas

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