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Request #62799 Parallel array processing
Submitted: 2012-08-11 19:50 UTC Modified: 2021-02-26 18:02 UTC
Votes:4
Avg. Score:4.0 ± 1.7
Reproduced:3 of 4 (75.0%)
Same Version:3 (100.0%)
Same OS:3 (100.0%)
From: info at ludwig-gramberg dot de Assigned:
Status: Suspended Package: Arrays related
PHP Version: Irrelevant OS: Any
Private report: No CVE-ID: None
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 [2012-08-11 19:50 UTC] info at ludwig-gramberg dot de
Description:
------------
Idea: an easy to use parallel processing function for arrays (or any iterable 
data structure).

Example:

<?php
$arr = array(1, 2, 3, 4);
array_process_parallel($arr, function($a) { return $a+5; });
?>

Now $arr would contain the following: [6, 7, 8, 9].
The values are written back to $arr. The parameter is called by reference.

Also a array_parallel_reduce would be nice.

Test script:
---------------
$arr = array(1, 2, 3, 4);
array_process_parallel($arr, function($a) { return $a+5; });

Expected result:
----------------
[6, 7, 8, 9]


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 [2012-08-12 13:01 UTC] laruence@php.net
do you mean something like array_map?  
http://us2.php.net/manual/en/function.array-walk.php
 [2012-08-12 13:01 UTC] laruence@php.net
s ,array_map,array_walk,  :)
 [2012-08-12 18:38 UTC] info at ludwig-gramberg dot de
yes, array_walk, map and so on could all be done in parallel, which would be very 
interesting speedwise
 [2021-02-26 18:02 UTC] cmb@php.net
-Status: Open +Status: Suspended
 [2021-02-26 18:02 UTC] cmb@php.net
This is unlikely to happen for NTS builds.  For ZTS builds you can
use the parallel extension[1] to build such functions in userland.

Anyhow, if you want to see this feature in php-src, please pursue
the RFC process[2].  For the time being, I'm suspending this
ticket.

[1] <http://pecl.php.net/parallel>
[2] <https://wiki.php.net/rfc/howto>
 
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