note 107372 added to function.usort
| From: | andi_mclean at ntlworld dot com | Date: | Sat, 04 Feb 2012 15:58:10 +0000 |
| Subject: | note 107372 added to function.usort | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-185851@lists.php.net to get a copy of this message | ||
I needed a sort method that would sort strings but take note of any numbers and would compare them
as number. I also want to ignore any non alphanumerical characters.
Eg.
Slot 1 Example
Slot 10 Example
Slot 2 Example
Should infact be
Slot 1 Example
Slot 2 Example
Slot 10 Example
<?php
function sort_with_numbers($a , $b) {
$a = explode(' ',$a);
$b = explode(' ',$b);
$size = min(count($a), count($b));
for($index =0; $index < $size; ++$index) {
$a1 = ereg_replace("[^A-Za-z0-9]", "",$a[$index]);
$b1 = ereg_replace("[^A-Za-z0-9]", "",$b[$index]);
$equal = 0;
if (is_numeric($a1) && is_numeric($b1)) {
$equal = $a1 - $b1;
} else {
$equal = strcasecmp($a1,$b1);
}
if ($equal < 0) {
return -1;
}
if ($equal > 0) {
return 1;
}
}
return count($a) - count($b);
}
?>
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Probable Submitter: 80.1.185.48
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Manual Page -- http://www.php.net/manual/en/function.usort.php
Edit -- https://master.php.net/note/edit/107372
Del: integrated -- https://master.php.net/note/delete/107372/integrated
Del: useless -- https://master.php.net/note/delete/107372/useless
Del: bad code -- https://master.php.net/note/delete/107372/bad+code
Del: spam -- https://master.php.net/note/delete/107372/spam
Del: non-english -- https://master.php.net/note/delete/107372/non-english
Del: in docs -- https://master.php.net/note/delete/107372/in+docs
Del: other reasons-- https://master.php.net/note/delete/107372
Reject -- https://master.php.net/note/reject/107372
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