note 71120 added to function.usort
| From: | Tim at osu1 dot php dot net | Date: | Mon, 13 Nov 2006 11:43:30 +0000 |
| Subject: | note 71120 added to function.usort | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-119654@lists.php.net to get a copy of this message | ||
If you want to sort an array of strings by the length of its values, you can write a better
cmp-function than manually comparing string lengths with if-statements. Unfortunately, I see this
bad technique in other people's code. I prefer using this:
<?php
function length_cmp( $a, $b ) {
return strlen($a)-strlen($b) ;
}
?>
This function sorts the array in ascending order. If you want to sort descending, simply swap $a and
$b either in the parameters or in the subtraction.
-Tim
----
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Manual Page -- http://www.php.net/manual/en/function.usort.php
Edit -- https://master.php.net/note/edit/71120
Del: integrated -- https://master.php.net/note/delete/71120/integrated
Del: useless -- https://master.php.net/note/delete/71120/useless
Del: bad code -- https://master.php.net/note/delete/71120/bad+code
Del: spam -- https://master.php.net/note/delete/71120/spam
Del: non-english -- https://master.php.net/note/delete/71120/non-english
Del: in docs -- https://master.php.net/note/delete/71120/in+docs
Del: other reasons-- https://master.php.net/note/delete/71120
Reject -- https://master.php.net/note/reject/71120
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