rfc:strncmpnegativelen

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rfc:strncmpnegativelen [2011/07/29 02:42] – [Proposal] laruencerfc:strncmpnegativelen [2013/05/28 06:23] – Withdrawn tyrael
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   * Date: 2011-07-28   * Date: 2011-07-28
   * Author: Xinchen Hui <laruence@php.net>   * Author: Xinchen Hui <laruence@php.net>
-  * Status: Under Discussion+  * Status: Withdrawn
   * First Published at: http://wiki.php.net/rfc/strncmpnegativelen/   * First Published at: http://wiki.php.net/rfc/strncmpnegativelen/
  
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 </code> </code>
  
-but we know substr supports a negative length as its parameter:+We need to write some codes like following one to make it works as expect: 
 <code php> <code php>
 <?php <?php
-   echo substr("test", 0, -1);+   if (strncmp(substr("prefix_num", -3, 3), "num", 3) === 0) { 
 +        echo "they have same suffix\n"; 
 +   } 
 +?> 
 </code> </code>
  
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 int(7) int(7)
 int(7) int(7)
 +*/
 ?>  ?> 
 </code> </code>
  
-===== Patchs =====+===== BC Breaks ===== 
 +   * Any strncmp call with a computed length which may end up being negative will now potentially return a match where it wouldn't before. 
 +===== Patches =====
    * http://www.laruence.com/php-dev/php-5.4-trunk-strncmp-supproting-negative-len.patch    * http://www.laruence.com/php-dev/php-5.4-trunk-strncmp-supproting-negative-len.patch
 ===== Tests ===== ===== Tests =====
    * http://www.laruence.com/php-dev/strncmpnegativelen.phpt    * http://www.laruence.com/php-dev/strncmpnegativelen.phpt
 +===== Vote =====
 +<doodle 
 +title="Do you want this feature in PHP 5.4" auth="laruence" voteType="single" closed="yes">
 +   * yes
 +   * no
 +</doodle>
 +
 ===== Changelog ===== ===== Changelog =====
   * 2011-07-28 Xinchen Hui: Initial RFC creation   * 2011-07-28 Xinchen Hui: Initial RFC creation
   * 2011-07-28 Xinchen Hui: Updated patch to avoid making binary API changed   * 2011-07-28 Xinchen Hui: Updated patch to avoid making binary API changed
 +  * 2011-08-01 Xinchen Hui: Start voting
 +  * 2011-08-08 Xinchen Hui: Edited phpt
 +  * 2011-08-13 Xinchen Hui: Stop voting
 +  * 2011-08-14 Xinchen Hui: Open voting again, since there comes some new objections
 +  * 2011-12-13 Xinchen Hui: Won't apply now
rfc/strncmpnegativelen.txt · Last modified: 2017/09/22 13:28 by 127.0.0.1

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