rfc:negative-string-offsets

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rfc:negative-string-offsets [2016/02/01 17:17] – francoisrfc:negative-string-offsets [2017/09/22 13:28] (current) – external edit 127.0.0.1
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 ====== PHP RFC: Generalize support of negative string offsets ====== ====== PHP RFC: Generalize support of negative string offsets ======
-  * Version: 1.2 +  * Version: 1.3 
-  * Date: 2016-02-01+  * Date: 2016-02-18
   * Author: François Laupretre <francois@php.net>   * Author: François Laupretre <francois@php.net>
-  * Status: Under discussion+  * Status: Implemented (in PHP 7.1)
   * First Published at: http://wiki.php.net/rfc/negative-string-offsets   * First Published at: http://wiki.php.net/rfc/negative-string-offsets
  
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 </code> </code>
  
-==== In functions ====+==== In built-in functions ====
  
 ^ Function ^ Add support for ^ ^ Function ^ Add support for ^
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 | mb_strpos| Negative offset | | mb_strpos| Negative offset |
 | mb_stripos| Negative offset | | mb_stripos| Negative offset |
- 
-==== In the documentation ==== 
- 
-As suggested during the discussion, authorizing the same '[]' syntax for strings and arrays is quite ambiguous, 
-especially with the addition of negative string offsets, which won't be supported on arrays. 
- 
-So, the documentation on www.php.net will be modified to recommend using the '{}' syntax when dealing with strings. This 
-will open the way for a potential future deprecation of the '[]' syntax on strings. 
  
 ==== Notes ==== ==== Notes ====
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 ===== Open Issues ===== ===== Open Issues =====
  
-  * Update documentation (waiting for RFC approval)+To do (waiting for RFC approval) : 
 + 
 +  * Update documentation 
 +  * Update language specifications
  
 ===== Unaffected PHP Functionality ===== ===== Unaffected PHP Functionality =====
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 ===== Future Scope ===== ===== Future Scope =====
  
-None+==== Recommend using '{}' vs '[]' for string offsets ==== 
 + 
 +It was suggested during the discussion that, since array access and string 
 +offsets are very different operations, the official documentation should 
 +recommend using the '{}' syntax for string offsets, instead of the ambiguous 
 +'[]' syntax (and potentially deprecate '[]' for string offsets in the future). 
 + 
 +On the opposite side, it was also suggested that array access and string offsets 
 +are so closely-related concepts that we should recommend using '[]' in both 
 +cases and disable the alternate '{}' syntax for string offsets ! 
 + 
 +So, as the subject is controversial and very tangential to the subject of this RFC, 
 +it will be left for a future RFC.
  
 ===== Proposed Voting Choices ===== ===== Proposed Voting Choices =====
  
 As this RFC adds support for negative string offsets in the language, it requires a 2/3 majority. As this RFC adds support for negative string offsets in the language, it requires a 2/3 majority.
 +
 +<doodle title="Generalize support of negative string offsets" auth="francois" voteType="single" closed="true">
 +   * Yes
 +   * No
 +</doodle>
  
 ===== Patches and Tests ===== ===== Patches and Tests =====
rfc/negative-string-offsets.1454347072.txt.gz · Last modified: 2017/09/22 13:28 (external edit)

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