Request for Comments: Allow use T_AS in closure use statement

• Version: 1.0
• Date: 2012/04/12
• Author: Xinchen Hui laruence@php.net
• Status: Withdrawn
• First Published at: http://wiki.php.net/rfc/useas

Allow use AS in the closure declaration, like:

<?php $foo = "bar"; $func = function () use ($foo as $dup, &$foo as $ref) { //alias name }; 

I have made a patch, after patch, the following script:

<?php $a = "2"; $b = function() use (&$a as $b, $a as $c, $a as $e) { echo $b; echo $c; echo $e; $b = 4; }; $b(); echo $a; class Foo { public function closure() { return function () use ($this as $obj) { var_dump($obj); }; } } $foo = new Foo(); $a = $foo->closure(); $a();

will output:

2224object(Foo)#2 (0) { }

I will be keeping improve this patch.

• https://gist.github.com/2367913

• 2012-04-12 Xinchen Hui Initial version
• 2012-07-18 Xinchen Hui Open voting
• 2012-07-19 Xinchen Hui Draw back, add dynamic variable supporting