note 93149 added to control-structures.foreach
| From: | hueen at osu1 dot php dot net | Date: | Tue, 25 Aug 2009 18:15:58 +0000 |
| Subject: | note 93149 added to control-structures.foreach | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-159886@lists.php.net to get a copy of this message | ||
In addition to the previous post by Krzysztof:
The above manual states that "Reference of a $value and the last array element remain even
after the foreach loop", but it should also be noted that foreach does not reinitialize $value
_before_ iterating. This means that if $value is a reference (of anything) before a foreach($array
as $value) loop, it will remain a reference while foreach is iterating (and thus the
reference's target gets overwritten with each iteration). If that foreach is run by reference
though (foreach($array as &$value)), $value's original reference inherently gets dropped
and it references each current $array element instead (as expected).
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Manual Page -- http://www.php.net/manual/en/control-structures.foreach.php
Edit -- https://master.php.net/note/edit/93149
Del: integrated -- https://master.php.net/note/delete/93149/integrated
Del: useless -- https://master.php.net/note/delete/93149/useless
Del: bad code -- https://master.php.net/note/delete/93149/bad+code
Del: spam -- https://master.php.net/note/delete/93149/spam
Del: non-english -- https://master.php.net/note/delete/93149/non-english
Del: in docs -- https://master.php.net/note/delete/93149/in+docs
Del: other reasons-- https://master.php.net/note/delete/93149
Reject -- https://master.php.net/note/reject/93149
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