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Request #63148 Pass array key to array_filter function callback
Submitted: 2012-09-24 09:18 UTC Modified: 2015-08-27 21:49 UTC
Votes:2
Avg. Score:1.5 ± 0.5
Reproduced:1 of 1 (100.0%)
Same Version:1 (100.0%)
Same OS:1 (100.0%)
From: hradtke@php.net Assigned: nikic (profile)
Status: Closed Package: Arrays related
PHP Version: 5.4Git-2012-09-24 (Git) OS:
Private report: No CVE-ID: None
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 [2012-09-24 09:18 UTC] hradtke@php.net 
Description:
------------
I would like to change array_filter to following prototype:

proto array array_filter(array input [, mixed callback, bool pass_key])

The callback prototype would change to:
proto bool callback(mixed value [, mixed key])

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 [2012-09-24 09:24 UTC] hradtke@php.net 
PR: https://github.com/php/php-src/pull/202
 [2012-09-25 02:49 UTC] laruence@php.net 
Hey, we have various array functions, and I do believe this can be done in another 
ways, 

so, why introduce this? thanks
 [2012-09-25 03:07 UTC] hradtke@php.net 
Everything that array_filter does can be done with a foreach loop though. Some 
people prefer the functional approach instead though.
 [2012-09-25 03:48 UTC] hradtke@php.net 
Also, the other functions, such as http://php.net/array_map, provide the key.
 [2012-09-25 09:52 UTC] laruence@php.net 
the problem is not about consistent with other functions, the problem is do we 
really need this?

maybe you should write to internal ML, get some more disscussion? :)

thanks
 [2015-08-27 21:49 UTC] nikic@php.net
-Status: Open +Status: Closed -Assigned To: +Assigned To: nikic
 [2015-08-27 21:49 UTC] nikic@php.net 
Supported since 5.6 via the ARRAY_FILTER_USE_KEY and ARRAY_FILTER_USE_BOTH flags.
 
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