rfc:loop_or

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rfc:loop_or [2014/09/19 21:39] – created leighrfc:loop_or [2017/09/22 13:28] (current) – external edit 127.0.0.1
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   * Version: 1.0   * Version: 1.0
   * Date: 2014-09-19   * Date: 2014-09-19
-  * Author: Leigh, leight -> gmail +  * Author: leigh@php.net 
-  * Status: Under Discussion+  * Status: Voting
   * First Published at: http://wiki.php.net/rfc/loop_or   * First Published at: http://wiki.php.net/rfc/loop_or
  
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 Alternate syntax loops also gain this functionality with a ''or:'' clause. Alternate syntax loops also gain this functionality with a ''or:'' clause.
  
-This type of behaviour has been suggested before usually using the ''else'' keyword, originally the idea was to use the ''default'' keyword however this can break ''switch'' when using a semi-colon after the ''default'' keyword (thanks @ Paul Crovella) however using ''else'' especially has several drawbacks that make ''or'' more attractive:+This type of behaviour has been suggested before typically using the ''else'' keyword. There are several bug report feature requests for this, and several templating engines (i.e. Twig and Smarty) emulate this functionality for their users. 
 + 
 +The originally conceived alternative was to use the ''default'' keyword however this can break ''switch'' when using a semi-colon after the ''default'' keyword (thanks @ Paul Crovella). However using ''else'' especially has several drawbacks that make ''or'' more attractive:
  
  * Not backwards compatible by default due to dangling ''else''  * Not backwards compatible by default due to dangling ''else''
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 ===== Proposed PHP Version(s) ===== ===== Proposed PHP Version(s) =====
-PHP.next (whether next is 7.0 or 5.7)+PHP 7
  
 ===== RFC Impact ===== ===== RFC Impact =====
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 ==== To Opcache ==== ==== To Opcache ====
 TODO - There may be an impact here, but any patch will review Opcache. This section needs commentary from internals. TODO - There may be an impact here, but any patch will review Opcache. This section needs commentary from internals.
- 
-===== Open Issues ===== 
-None 
  
 ===== Unaffected PHP Functionality ===== ===== Unaffected PHP Functionality =====
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 There may be an opporunity to support the python style loop+else, but this will require a new keyword to preserve dangling else backward compatibility There may be an opporunity to support the python style loop+else, but this will require a new keyword to preserve dangling else backward compatibility
  
-===== Proposed Voting Choices =====+===== Vote =====
 This is a language change and requires a 2/3 majority in favour of the feature. This is a language change and requires a 2/3 majority in favour of the feature.
 +
 +<doodle title="Loop + or control structure in PHP 7" auth="leigh" voteType="single" closed="true">
 +   * Yes
 +   * No
 +</doodle>
  
 ===== Patches and Tests ===== ===== Patches and Tests =====
-A proof of concept is being worked on by Leigh - ''while'' and ''for'' are working - ''foreach'' currently segfaulting+[[https://github.com/lt/php-src/compare/loop-or|Proof of concept]] - no tests yet.
  
 ===== Implementation ===== ===== Implementation =====
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 ===== Changelog ===== ===== Changelog =====
 +2014-09-21 - Added proof of concept patch link.
 +
 +2014-09-20 - Changed target version to PHP 7
 +
 +2014-09-20 - Added details that templating engines emulate this behaviour
 +
 2014-09-19 - v1.0 - RFC created 2014-09-19 - v1.0 - RFC created
  
rfc/loop_or.1411162775.txt.gz · Last modified: 2017/09/22 13:28 (external edit)

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