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Date: Sun, 5 Jun 2011 12:52:45 -0300
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To: internals <internals@lists.php.net>
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Subject: $arr = array('Hello', 'world'); $arr();
From: felipensp@gmail.com (Felipe Pena)

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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?

[1] - http://bugs.php.net/bug.php?id=47160
[2] - http://felipe.ath.cx/diff/fr47160.diff
phpt: http://felipe.ath.cx/diff/fr47160.phpt

-- 
Regards,
Felipe Pena

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