#48543 [NEW]: Introduction of a substitute for array_change_key_case which takes a callback.

From: Date: Sat, 13 Jun 2009 11:21:40 +0000
Subject: #48543 [NEW]: Introduction of a substitute for array_change_key_case which takes a callback.
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-138259@lists.php.net to get a copy of this message 
From:             simon at stienen dot name
Operating system: 
PHP version:      5.3.0RC3
PHP Bug Type:     Feature/Change Request
Bug description:  Introduction of a substitute for array_change_key_case which takes a callback.

Description:
------------
While array_change_key_case allows for changing array keys in regards to
capitalization, it is very limited in its function.
Therefore I request the introduction of a new function (for the sake of
the discussion, I'll call it "array_change_keys") that takes an array and a
callback and then calls the callback for each key, passing the key as a
parameter (possibly also passing the value as another parameter) and
replaces the old key with the return value of the function call - under the
same constraints as mentioned in http://php.net/array_change_key_case in
terms of replacing elements with colliding keys.

Signature:
array array_change_keys  ( array $input, callback $callback )

Reproduce code:
---------------
<?php

$a = array(
  'peter' => 'm, 71',
  'paul'  => 'm, 72',
  'mary'  => 'f, 73'
);

$b = array_change_keys($a, 'strlen');


Expected result:
----------------
$b === array(
  5 => 'm, 71',
  4 => 'f, 73'
)

('paul' was overridden by the element 'mary' which resulted in the same
key name)


-- 
Edit bug report at http://bugs.php.net/?id=48543&edit=1
-- 
Try a CVS snapshot (PHP 5.2):        http://bugs.php.net/fix.php?id=48543&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):        http://bugs.php.net/fix.php?id=48543&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):        http://bugs.php.net/fix.php?id=48543&r=trysnapshot60
Fixed in CVS:                        http://bugs.php.net/fix.php?id=48543&r=fixedcvs
Fixed in CVS and need be documented: http://bugs.php.net/fix.php?id=48543&r=needdocs
Fixed in release:                    http://bugs.php.net/fix.php?id=48543&r=alreadyfixed
Need backtrace:                      http://bugs.php.net/fix.php?id=48543&r=needtrace
Need Reproduce Script:               http://bugs.php.net/fix.php?id=48543&r=needscript
Try newer version:                   http://bugs.php.net/fix.php?id=48543&r=oldversion
Not developer issue:                 http://bugs.php.net/fix.php?id=48543&r=support
Expected behavior:                   http://bugs.php.net/fix.php?id=48543&r=notwrong
Not enough info:                     http://bugs.php.net/fix.php?id=48543&r=notenoughinfo
Submitted twice:                     http://bugs.php.net/fix.php?id=48543&r=submittedtwice
register_globals:                    http://bugs.php.net/fix.php?id=48543&r=globals
PHP 4 support discontinued:          http://bugs.php.net/fix.php?id=48543&r=php4
Daylight Savings:                    http://bugs.php.net/fix.php?id=48543&r=dst
IIS Stability:                       http://bugs.php.net/fix.php?id=48543&r=isapi
Install GNU Sed:                     http://bugs.php.net/fix.php?id=48543&r=gnused
Floating point limitations:          http://bugs.php.net/fix.php?id=48543&r=float
No Zend Extensions:                  http://bugs.php.net/fix.php?id=48543&r=nozend
MySQL Configuration Error:           http://bugs.php.net/fix.php?id=48543&r=mysqlcfg

Thread (3 messages)

« previous php.bugs (#138259) next »