ID: 26396 User updated by: php dot net dot 1 at odi dot ch Reported By: php dot net dot 1 at odi dot ch Status: Wont fix Bug Type: Arrays related Operating System: * PHP Version: 4.3.3 New Comment:
Sad to see that PHP's language constructs are so fundamentally flawed. Previous Comments: ------------------------------------------------------------------------ [2003-11-25 18:11:31] jpatrin at pnicorp dot com Ok, I'll accept that response, but why does foreach not make a copy of the referenced array? I see no place in the foreach docs that say that it doesn't make a copy when the variable is a reference. Sidenote: I thought that all PHP vars were refernces and that usinf =& made it a refernce to the same object instead of a refernce to a copy of the object. If this is true, the copy should still be made just fine. foreach is ALWAYS supposed to make a copy of the array and foreach over that. ------------------------------------------------------------------------ [2003-11-25 17:21:46] [EMAIL PROTECTED] 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 I was right then. Global creates a reference and referenced arrays cannot be nested. When an array is passed to foreach and it is not a reference then a copy of the array is created. That's where the difference comes from. ------------------------------------------------------------------------ [2003-11-25 16:27:47] jpatrin at pnicorp dot com Here's a bit more. If you use $usr_langs =& $GLOBALS['usr_langs']; instead of global $usr_langs; the same bug presents it self. Also, if you put global $usr_langs; above the echo "Test2..." You get only "de" in the output. It seems like global is munging the scope of foreach copies. ------------------------------------------------------------------------ [2003-11-25 16:08:19] [EMAIL PROTECTED] Interesting, anybody? ------------------------------------------------------------------------ [2003-11-25 13:22:18] jpatrin at pnicorp dot com Here's the proof that the global keyword is broken. If you change the code to use $GLOBALS as such: <?php function f() { foreach($GLOBALS['usr_langs'] as $lang) { } } function g() { foreach($GLOBALS['usr_langs'] as $lang) { f(); echo $lang.' '; } } echo 'Test1:<br>'; g(); echo '<br>----------<br>'; echo 'Test2:<br>'; foreach($usr_langs as $lang) { f(); echo $lang.' '; } ?> The output is: Test1: de fr it ---------- Test2: de fr it As was originally expected. Please either open this bug again or explain why global is treated differently than $GLOBALS. ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/26396 -- Edit this bug report at http://bugs.php.net/?id=26396&edit=1
