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Cc: KOYAMA Tetsuji <koyama@hoge.org>, internals@lists.php.net
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Date: Fri, 22 Feb 2008 10:00:11 -0800
To: Matvey Arye <marye@geminisbs.com>
Subject: Re: [PHP-DEV] [RFC] Anonymous functions
From: andrei@gravitonic.com (Andrei Zmievski)

Yes, let's re-open, I'd like to get a closure on that issue (pun  
intended).

-Andrei

On Feb 18, 2008, at 8:26 AM, Matvey Arye wrote:

> Hi All,
>
> I second this. Can we please re-open the discussion on anonymous  
> functions as well as closures. That would be an awesome feature.  
> create_function is a bit ugly semantically to be sufficient for all  
> anonymous function needs.
>
> Thanks,
> Mat
>
> KOYAMA Tetsuji wrote:
>> Hi lists,
>>
>> Is this discussion stopping?
>>
>> I want this feature in PHP. Please start to talk.
>>
>> On Jan 10, 2008 7:09 PM, Ryusuke SEKIYAMA <rsky0711@gmail.com> wrote:
>>
>>> Hello, lists,
>>>
>>> We have discussed about implementing anonymous functions and
>>> closures in PHP.
>>> However, I consider that implementing anonymous functions and
>>> implementing lexical scopes should be discussed separately.
>>> # Even though I like closure. ;-)
>>> So I wrote anonymous function patch for PHP 5.3 and 6.0.
>>>
>>>
>>> Patches (inlcude tests):
>>> for PHP 5.3: http://www.opendogs.org/pub/php-5.3dev-080109- 
>>> anon.patch
>>> for PHP 6.0: http://www.opendogs.org/pub/php-6.0dev-080109- 
>>> anon.patch
>>>
>>>
>>> Featues:
>>> - Unlike create_function(), there is no need to take care of
>>>  quotes, backslashes and dollars .
>>> - Can be used in loop, but be compiled only once.
>>> - Supports recursive call using __FUNCTION__.
>>> - Supports inline execution. It works like a block scope.
>>> - Works with opcode caches.
>>>  Since I couldn't build APC against PHP 5.3, I have tested
>>>  PHP 5.2.5 + anonymous function patch and APC 3.0.16.
>>>
>>>
>>> Example:
>>> <?php
>>> // callback
>>> $arr = array(5, 3, 6, 0);
>>> usort($arr, function($a, $b){ return $a - $b; });
>>> print_r($arr); // 0, 3, 5, 6
>>>
>>> // assign to a variable
>>> $lambda = function(){
>>>  echo "Hello, World!\n";
>>> };
>>> $lambda(); // "Hello, World!"
>>>
>>> // inline execution
>>> $result = function($a, $b){
>>>  return $a + $b;
>>> }(1, 2);
>>> var_dump($result); // "int(3)"
>>> ?>
>>>
>>>
>>> The anonymous function name is composed of '\0',  
>>> "ZEND_ANON<#serial>",
>>> filename and character position.
>>> - Leading '\0' blocks to be displayed by get_defined_functions().
>>> - "ZEND_ANON<" helps determine wheter the function is anonymous  
>>> or not
>>>  because '<' cannot be used for user-defined function name.
>>> - Serial number and file informations make the name unique.
>>> - char anon_key_buf[32] is long enough because
>>>  `snprintf(anon_key_buf, 32, "ZEND_ANON<%llu>", (unsigned long
>>> long)UINT64_MAX)'
>>>  returns 31.
>>>
>>>
>>> Regards,
>>>
>>>
>>> 2008/1/6, Marcus Boerger <helly@php.net>:
>>>
>>>> Hello Stanislav,
>>>>
>>>>   tha makesw three then already, how about we ask around again?
>>>> Ryusuke, can you please start a new '[RFC] Square brackets  
>>>> shortcut' thread
>>>> to collect opinions and pass along the patch for that?
>>>>
>>>> I like the anonymous function patch too. It is clean and simple.  
>>>> Maybe you
>>>> want to start a second '[RFC] Anonymous functions' thread with  
>>>> that patch.
>>>>
>>>> Can you also please add tests for both?
>>>>
>>>> marcus
>>>>
>>>> Wednesday, January 2, 2008, 7:51:06 PM, you wrote:
>>>>
>>>>
>>>>>> the square bracket array syntax patch for PHP 5.3,
>>>>>>   http://www.opendogs.org/pub/php-5.3dev-080101-sbar.patch
>>>>>>
>>>>> I remember we discussed that already and it was rejected then  
>>>>> (even
>>>>> though myself and Andi liked it) - did the people that objected  
>>>>> then
>>>>> change their minds?
>>>>>
>>>>
>>>> Best regards,
>>>>  Marcus
>>>>
>>>>
>>>>
>>> --
>>> /**
>>>  * Ryusuke SEKIYAMA
>>>  * rsky0711@gmail.com
>>>  */
>>>
>>> --
>>> PHP Internals - PHP Runtime Development Mailing List
>>> To unsubscribe, visit: http://www.php.net/unsub.php
>>>
>>>
>>>
>>
>> -
>> KOYAMA, Tetsuji
>> koyama@hoge.org
>>
>>
>
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