note 49677 added to control-structures.foreach
| From: | djelencatgmaildotcom at osu1 dot php dot net | Date: | Fri, 04 Feb 2005 14:07:48 +0000 |
| Subject: | note 49677 added to control-structures.foreach | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-84524@lists.php.net to get a copy of this message | ||
Interestingly enough to post it here, I guess.
If you want to get only keys from an array, while...list...each approach is faster than foreach.
<?php
while(list($key) = each($array)) {
echo "$key <br>\n";
}
foreach($array as $key => $value) {
echo "$key <br>\n";
}
?>
It makes sense, since you cannot call only keys from an array with foreach().
----
Manual Page -- http://www.php.net/manual/en/control-structures.foreach.php
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