Edit report at https://bugs.php.net/bug.php?id=62110&edit=1
ID: 62110
Comment by: a dot protaskin at gmail dot com
Reported by: a dot protaskin at gmail dot com
Summary: Foreach creates a copy of the array passed by value
in function
Status: Open
Type: Bug
Package: Performance problem
Operating System: Arch Linux
PHP Version: 5.4.3
Block user comment: N
Private report: N
New Comment:
Thanks for your answers, nikic. I read your answer in the neighbouring entry
and your articles too. I understood this behaviour, this is not the bug.
Sorry for my bad english.
Previous Comments:
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[2012-05-23 21:59:30] ni...@php.net
The foreach loop changes the internal array pointer. If the array zval wouldn't
be separated the loop thus would thus affect he array which was passed by
value, which is obviously not acceptable.
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[2012-05-22 19:56:06] a dot protaskin at gmail dot com
Description:
------------
I also tried to execute this code on PHP 5.3.13 and PHP 5.2.17 with same result.
All options are default.
Test script:
---------------
http://pastebin.com/caczCxuD
Expected result:
----------------
Start: 786432
Inner by_reference: 786432
Inner foreach: 786432
After by_reference: 786432
Inner by_value: 786432
Inner foreach: 786432
After by_value: 786432
Actual result:
--------------
Start: 786432
Inner by_reference: 786432
Inner foreach: 786432
After by_reference: 786432
Inner by_value: 786432
Inner foreach: 1310720
After by_value: 104857
------------------------------------------------------------------------
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Edit this bug report at https://bugs.php.net/bug.php?id=62110&edit=1
