note 70638 added to function.decbin
| From: | info at duriel dot net | Date: | Sun, 22 Oct 2006 19:13:46 +0000 |
| Subject: | note 70638 added to function.decbin | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-118982@lists.php.net to get a copy of this message | ||
This simple function checks if a number is a potency of 2:
<?php
function potency ($number) {
return substr_count(decbin($number),'1') == 1 ? true : false;
}
?>
Sometimes useful.
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Server IP: 212.124.37.9
Probable Submitter: 84.167.230.162
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Manual Page -- http://www.php.net/manual/en/function.decbin.php
Edit -- https://master.php.net/note/edit/70638
Del: integrated -- https://master.php.net/note/delete/70638/integrated
Del: useless -- https://master.php.net/note/delete/70638/useless
Del: bad code -- https://master.php.net/note/delete/70638/bad+code
Del: spam -- https://master.php.net/note/delete/70638/spam
Del: non-english -- https://master.php.net/note/delete/70638/non-english
Del: in docs -- https://master.php.net/note/delete/70638/in+docs
Del: other reasons-- https://master.php.net/note/delete/70638
Reject -- https://master.php.net/note/reject/70638
Search -- https://master.php.net/manage/user-notes.php