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Date: Tue, 13 Dec 2022 15:45:32 +0000
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Subject: Re: [PHP-DEV] Revisiting RFC: Engine Warnings -- Undefined array
 index
From: rowan.collins@gmail.com (Rowan Tommins)

On 13/12/2022 14:32, Craig Francis wrote:
> Most frameworks return NULL when the user has not provided the value:
>
>      $search = $request->input('q'); // Laravel
>      $search = $request->get('q'); // Symfony
>      $search = $this->request->getQuery('q'); // CakePHP
>      $search = $request->getGet('q'); // CodeIgniter


Fair enough.

Although presumably they return null rather than an empty string 
precisely so that users can check if the value was provided, without 
providing an extra method equivalent to isset($_GET['q']), e.g.

if ( $search === null ) {
     render_search_form();
}
elseif ( trim($search) === '' ) {
     show_validation_error();
}
else {
     perform_search($search);
}


For cases where you don't need that distinction, Laravel, Symfony, and 
CakePHP all allow a default to be passed as the second parameter.


Regards,

-- 
Rowan Tommins
[IMSoP]