note 77151 added to function.array-sum
| From: | Coder at osu1 dot php dot net | Date: | Thu, 16 Aug 2007 23:10:20 +0000 |
| Subject: | note 77151 added to function.array-sum | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-129549@lists.php.net to get a copy of this message | ||
A much simpler algorithm for array_sub():
<?php
function array_sub($arr) {
if (!is_array($arr) || count($arr) == 0) {
return false;
} else {
// get first element
$base = array_shift($arr);
return $base - array_sum($arr);
}
}
?>
This will return the exact same results that didikdwi's version.
However, didikdwi's result depends on knowing what the first value is. When this likely bug is
removed, the code is:
<?php
function array_sub($arr){
$temp = array_sum($arr);
return ( $temp !== false ? -$temp : false );
}
?>
----
Server IP: 64.71.164.2
Probable Submitter: 70.61.33.121
----
Manual Page -- http://www.php.net/manual/en/function.array-sum.php
Edit -- https://master.php.net/note/edit/77151
Del: integrated -- https://master.php.net/note/delete/77151/integrated
Del: useless -- https://master.php.net/note/delete/77151/useless
Del: bad code -- https://master.php.net/note/delete/77151/bad+code
Del: spam -- https://master.php.net/note/delete/77151/spam
Del: non-english -- https://master.php.net/note/delete/77151/non-english
Del: in docs -- https://master.php.net/note/delete/77151/in+docs
Del: other reasons-- https://master.php.net/note/delete/77151
Reject -- https://master.php.net/note/reject/77151
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