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Date: Wed, 8 Jun 2011 08:57:48 -0300
Message-ID: <BANLkTikirc6SxSkvg+UaM6u5hn7QZinzYA@mail.gmail.com>
To: Christian Kaps <christian.kaps@mohiva.com>
Cc: internals@lists.php.net
Content-Type: multipart/alternative; boundary=000e0cd32f30d5e37504a5320ca2
Subject: Re: [PHP-DEV] Re: $arr = array('Hello', 'world'); $arr();
From: felipensp@gmail.com (Felipe Pena)

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Content-Type: text/plain; charset=UTF-8

Hi,

2011/6/8 Christian Kaps <christian.kaps@mohiva.com>

> Hi,
>
>
>  Hi all,
>> Reading our bug tracker I noticed a good feature request [1] from 2009
>> which
>> points to an interesting feature that I think makes sense for us, since we
>> are now working with $f() using objects and strings, and the
>> array('class',
>> 'method') is an old known for call_user_func()-like functions.
>>
>> So, I wrote a patch [2] that allow such behavior to be consistent with
>> arrays. See some examples:
>>
>> class Hello {
>>   public function world($x) {
>>      echo "Hello, $x\n"; return $this;
>>   }
>> }
>>
>> $f = array('Hello','world');
>> var_dump($f('you'));
>>
>> $f = array(new Hello, 'foo');
>> $f();
>>
>> All such calls match with the call_user_func() behavior related to magic
>> methods, static & non-static methods.
>>
>> The array to be a valid callback should be a 2-element array, and it must
>> be
>> for the first element object/string and for the second string only. (just
>> like our zend_is_callable() check and opcodes related to init call)
>>
>> Any thoughts?
>>
>>
>
> what happens if I use this code.
>
> class Foo {
>
>   public $bar;
>
>   public function __construct() {
>
>      $this->bar = array($this, 'baz');
>      $this->bar();
>   }
>
>   public function bar() {
>      echo 'bar';
>   }
>
>   public function baz() {
>      echo 'baz';
>   }
> }
>
> new Foo();
>
> What is the output of this snippet?
>
> Are there the same rules as for closures?
>
> Christian
>
>
Yes, the same rules.

-- 
Regards,
Felipe Pena

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