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Date: Wed, 19 Sep 2012 19:23:01 +0100
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To: Steve Clay <steve@mrclay.org>
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Subject: Re: [PHP-DEV] RFC: alternative callback syntax
From: ajf@ajf.me (Andrew Faulds)

On 19/09/12 19:21, Steve Clay wrote:
> On 9/19/12 2:01 PM, Andrew Faulds wrote:
>>> Some other ideas:
>>>
>>> $cb = (callable) $obj->bar;
>> Ah, but (callable) that won't work for global functions, since 
>> (callable) is a cast, and
>
> (callable) is not usable as a cast (at least in 5.4.7):
>
> $a = (callable)'str'; // Parse error: syntax error, unexpected 
> 'callable' (T_CALLABLE)
>
> This could work, and it makes sense to me at least.
Yes, the problem is that it would add a special syntax case, where 
(cast)identifier, in this case, uses a function name, not an expression. 
This is bad.

-- 
Andrew Faulds
http://ajf.me/