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Date: Thu, 25 Feb 2021 08:55:07 +0000
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Subject: Re: [PHP-DEV] Inline conditional that returns null if falsy
From: rowan.collins@gmail.com (Rowan Tommins)

On 24/02/2021 04:26, Mike Schinkel wrote:
> Repeating code similar to that from the message sent by David Rodrigues you can see that eliminating the ": null" is less noisy:
>
>      <div class="user <?php user ? 'online' : null ?>">...</div>
>      <div class="user <?php user ? 'online' ?>">...</div>


That's an interesting use case. Of course, the logical default there is 
actually '' (empty string) rather than null, since "echo null;" doesn't 
actually make much sense, but null works under current type juggling rules.

Then again, perhaps this is a good example of why PHP *isn't* the best 
choice any more if you want a templating language. Twig, for instance, 
has exactly this facility 
[https://twig.symfony.com/doc/3.x/templates.html#other-operators]:

{{  foo  ?  'yes'  :  'no'  }}
{{  foo  ?:  'no'  }}is the same as {{  foo  ?  foo  :  'no'  }}
{{  foo  ?  'yes'  }}is the same as {{  foo  ?  'yes'  :  ''  }}

If we wanted to close the gap between Twig and plain PHP for templating, 
this might be somewhere on the list, but after more significant features 
like automatic escaping, filter / pipe syntax, etc.


Regards,

-- 
Rowan Tommins
[IMSoP]