[PHP-BUG] Bug #62110 [NEW]: Foreach creates a copy of the array passed by value in function
From: Operating system: Arch Linux PHP version: 5.4.3 Package: Performance problem Bug Type: Bug Bug description:Foreach creates a copy of the array passed by value in function 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 -- Edit bug report at https://bugs.php.net/bug.php?id=62110&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=62110&r=trysnapshot54 Try a snapshot (PHP 5.3): https://bugs.php.net/fix.php?id=62110&r=trysnapshot53 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=62110&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=62110&r=fixed Fixed in SVN and need be documented: https://bugs.php.net/fix.php?id=62110&r=needdocs Fixed in release: https://bugs.php.net/fix.php?id=62110&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=62110&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=62110&r=needscript Try newer version: https://bugs.php.net/fix.php?id=62110&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=62110&r=support Expected behavior: https://bugs.php.net/fix.php?id=62110&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=62110&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=62110&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=62110&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=62110&r=php4 Daylight Savings:https://bugs.php.net/fix.php?id=62110&r=dst IIS Stability: https://bugs.php.net/fix.php?id=62110&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=62110&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=62110&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=62110&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=62110&r=mysqlcfg
[PHP-BUG] Bug #62123 [NEW]: Foreach changes the internal pointer of the array strangely
From: Operating system: Linux PHP version: 5.4.3 Package: Arrays related Bug Type: Bug Bug description:Foreach changes the internal pointer of the array strangely Description: Traversing the array changes once the internal pointer by 1. Traversing the array by link changes the internal pointer just as with each(). Test script: --- https://bugs.php.net/bug.php?id=62123&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=62123&r=trysnapshot54 Try a snapshot (PHP 5.3): https://bugs.php.net/fix.php?id=62123&r=trysnapshot53 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=62123&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=62123&r=fixed Fixed in SVN and need be documented: https://bugs.php.net/fix.php?id=62123&r=needdocs Fixed in release: https://bugs.php.net/fix.php?id=62123&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=62123&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=62123&r=needscript Try newer version: https://bugs.php.net/fix.php?id=62123&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=62123&r=support Expected behavior: https://bugs.php.net/fix.php?id=62123&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=62123&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=62123&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=62123&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=62123&r=php4 Daylight Savings:https://bugs.php.net/fix.php?id=62123&r=dst IIS Stability: https://bugs.php.net/fix.php?id=62123&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=62123&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=62123&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=62123&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=62123&r=mysqlcfg
Bug #62123 [Com]: Foreach changes the internal pointer of the array strangely
Edit report at https://bugs.php.net/bug.php?id=62123&edit=1 ID: 62123 Comment by: a dot protaskin at gmail dot com Reported by: a dot protaskin at gmail dot com Summary:Foreach changes the internal pointer of the array strangely Status: Open Type: Bug Package:Arrays related Operating System: Linux PHP Version:5.4.3 Block user comment: N Private report: N New Comment: Thanks for your answer, nikic. I understood this behaviour, this is not the bug. Previous Comments: [2012-05-23 21:54:57] ni...@php.net See http://stackoverflow.com/a/8263425/385378 for an explanation. [2012-05-23 13:23:38] a dot protaskin at gmail dot com Description: Traversing the array changes once the internal pointer by 1. Traversing the array by link changes the internal pointer just as with each(). Test script: --- https://bugs.php.net/bug.php?id=62123&edit=1
Bug #62110 [Com]: Foreach creates a copy of the array passed by value in function
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: [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. [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 -- Edit this bug report at https://bugs.php.net/bug.php?id=62110&edit=1
