note 93986 added to function.uasort
| From: | Alt_F4 at osu1 dot php dot net | Date: | Sat, 10 Oct 2009 03:34:25 +0000 |
| Subject: | note 93986 added to function.uasort | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-161613@lists.php.net to get a copy of this message | ||
I couldn't work out a way to specify what element to sort by using the existing php functions -
maybe I didn't look hard enough?? So i wrote my own multidimensional array sorting class.
<?php
$stock = array(array("id" => 1,"item" => "hat",
"number" => 5, "price" => 15),
array("id" => 5,"item" => "shoes",
"number" => 1, "price" => 50),
array("id" => 3,"item" => "tie",
"number" => 2, "price" => 30));
$sort = new multiSort();
//will sort the array by id in ascending order
print_r ($sort->sortArray($stock,'id','rcmp'));
//will sort the array by id in descending order
print_r ($sort->sortArray($stock,'id','cmp'));
//can also be used like so (specifying the index of the array)
print_r ($sort->sortArray($stock,'0','rcmp'));
//////////////////////////////////////////////////////
class multiSort {
function sortArray($array,$parameter,$_function) { return
$this->_uasort($array,$_function,$parameter); }
function cmp ($a, $b, $p) { return (strcmp ($a[$p],$b[$p]));}
function rcmp ($a, $b, $p) { return -1 * (strcmp ($a[$p],$b[$p]));}
function _uasort($array,$func,$param) {
for($i=0;$i<sizeof($array);$i++) {
$tmp = $i;
for($j=1;$j<sizeof($array);$j++) {
$result = $this->$func($array[$tmp],$array[$j],$param);
if($result == -1) {
$array = $this->arraySwap($array,$tmp,$j);
$tmp = $j;
}
}
}
return $array;
}
function arrayswap($arr, $src, $dst) {
$tmp = $arr[$dst];
$arr[$dst] = $arr[$src];
$arr[$src] = $tmp;
return $arr;
}
}
//////////////////////////////////////////////////////////
?>
hope someone finds this useful.
----
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Probable Submitter: 120.17.187.105
----
Manual Page -- http://www.php.net/manual/en/function.uasort.php
Edit -- https://master.php.net/note/edit/93986
Del: integrated -- https://master.php.net/note/delete/93986/integrated
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