note 125960 added to function.array-multisort
| From: | lingtalfi@php.net | Date: | Thu, 25 Mar 2021 14:44:05 +0000 |
| Subject: | note 125960 added to function.array-multisort | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-219147@lists.php.net to get a copy of this message | ||
For database like sorting, here is my 2 cents:
<?php
/**
* The RowsSortHelperTool class.
*/
class RowsSortHelperTool
{
/**
* Sorts the given array, based on the given sorts.
*
* The sorts argument is an array of field => direction,
*
* with:
*
* - field: string, the name of the property to sort the rows with
* - direction: string (asc|desc), the direction of the sort
*
*
* @param array $rows
* @param array $sorts
* @return array
*/
public static function sort(array &$rows, array $sorts)
{
$args = [];
foreach ($sorts as $field => $direction) {
$col = array_column($rows, $field);
$args[] = $col;
if ('asc' === $direction) {
$args[] = SORT_ASC;
} else {
$args[] = SORT_DESC;
}
}
$args[] = &$rows;
call_user_func_array("array_multisort", $args);
}
}
?>
Use it like this:
<?php
$data[] = array('volume' => 67, 'edition' => 2, 'mine' => 5);
$data[] = array('volume' => 86, 'edition' => 1, 'mine' => 5);
$data[] = array('volume' => 85, 'edition' => 6, 'mine' => 5);
$data[] = array('volume' => 98, 'edition' => 2, 'mine' => 5);
$data[] = array('volume' => 86, 'edition' => 6, 'mine' => 4);
$data[] = array('volume' => 86, 'edition' => 6, 'mine' => 5);
$data[] = array('volume' => 67, 'edition' => 7, 'mine' => 5);
RowsSortHelperTool::sort($data, [
'volume' => 'desc',
'edition' => 'asc',
'mine' => 'desc',
]);
az($data);
?>
Will display something like this:
array(7) {
[0] => array(3) {
["volume"] => int(98)
["edition"] => int(2)
["mine"] => int(5)
}
[1] => array(3) {
["volume"] => int(86)
["edition"] => int(1)
["mine"] => int(5)
}
[2] => array(3) {
["volume"] => int(86)
["edition"] => int(6)
["mine"] => int(5)
}
[3] => array(3) {
["volume"] => int(86)
["edition"] => int(6)
["mine"] => int(4)
}
[4] => array(3) {
["volume"] => int(85)
["edition"] => int(6)
["mine"] => int(5)
}
[5] => array(3) {
["volume"] => int(67)
["edition"] => int(2)
["mine"] => int(5)
}
[6] => array(3) {
["volume"] => int(67)
["edition"] => int(7)
["mine"] => int(5)
}
}
----
Server IP: 45.112.84.4
Probable Submitter: 45.112.85.247 (proxied: 143.244.57.69)
----
Manual Page -- http://php.net/manual/en/function.array-multisort.php
Edit -- https://master.php.net/note/edit/125960
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