Bug #71010 [Ver->Nab]: Result of the program is not correct while the variable assignment by reference

Edit report at https://bugs.php.net/bug.php?id=71010&edit=1 ID: 71010 Updated by: laruence@php.net Reported by: miaojuanfeng at qq dot com Summary: Result of the program is not correct while the variable assignment by reference -Status: Verified +Status: Not a bug Type: Bug Package: Scripting Engine problem Operating System: linux PHP Version: 5.6Git-2015-12-01 (Git) Block user comment: N Private report: N New Comment: Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php this is an undefined behavior, as in php the sequence point definition is similar as C. Previous Comments: ------------------------------------------------------------------------ [2015-12-02 07:13:10] miaojuanfeng at qq dot com I have pull two request at github: Fixed bug #71010 ：part 1 Fixed bug #71010 ：part 2 something failed. Hm...may be I don't know how to use github. I believe my code is correct. ------------------------------------------------------------------------ [2015-12-02 07:13:10] miaojuanfeng at qq dot com Related To: Bug #71010 ------------------------------------------------------------------------ [2015-12-02 07:13:10] miaojuanfeng at qq dot com Related To: Bug #71010 ------------------------------------------------------------------------ [2015-12-01 21:20:19] requinix@php.net Fixed in PHP 7. https://3v4l.org/GnfFs Where is your pull request? ------------------------------------------------------------------------ [2015-12-01 15:59:01] miaojuanfeng at qq dot com Description: ------------ Hi, I'm chinese, I do my best to let each other understand. :) result of the program is not correct while the variable assignment by reference. I have fixed the bug and pull request at github. Test script: --------------- $a = 1; $b = &$a; $c = (++$a)+(++$a)+(++$a); echo $c; Expected result: ---------------- 9 Actual result: -------------- 10 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=71010&edit=1