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[英]Sorting multi-dimensional array using array_multisort, where you don't know the dimensions of the array
[英]do you know better performance solution for sorting array in array in array?
我想按字母順序基於他們的sku對數組進行排序,我用三個foraeach循環編寫了這個程序,我想我沒有把它寫成最好的解決方案,你知道其他更好嗎?你的想法是什么?
$array[] = array('data' => array('entity_id' => 3446,'sku' => 'A'));
$array[] = array('data' => array('entity_id' => 3546,'sku' => 'D'));
$array[] = array('data' => array('entity_id' => 7446,'sku' => 'C'));
$array[] = array('data' => array('entity_id' => 2446,'sku' => 'B'));
$array[] = array('data' => array('entity_id' => 7446,'sku' => 'E'));
$array[] = array('data' => array('entity_id' => 9446,'sku' => 'F'));
foreach ($array as $key => $data) {
foreach ($data as $k=> $v)
{
$newarray[$key] = $v['sku'];
}
}
asort($newarray);
foreach ( $newarray as $k=>$v)
$keys[]=$k;
$result=array();
foreach($keys as $k=>$v) {
$result[$k] = $array[$v];
}
假設您只想對外部數組進行排序,您只需要一個自定義排序函數:
usort($array, "sort_by_sku");
function sort_by_sku($a, $b) {
return strcmp($a["data"]["sku"], $b["data"]["sku"]);
}
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