[英]Make a Multidimensional Array from a Multidimensional Array in php
我有這個多維數組:
$sales = Array (
[0] => Array (
[salesID] => 1
[price] => 50
[user_first] => Jane
[user_last] => Doe
)
[1] => Array (
[salesID] => 2
[price] => 250
[user_first] => John
[user_last] => Smith
)
[2] => Array (
[salesID] => 1
[price] => 50
[user_first] => Jane
[user_last] => Doe
)
);
我需要變成:
$sales = Array(
[2] => Array (
[Name] => John Smith
[Sales] => 250
[Signups] => 1
)
[1] => Array (
[Name] => Jane Doe
[Sales] => 100
[Signups] => 2
)
);
我目前有以下內容將創建新數組,但它不會更新新數組中的值。
$leader_board = array();
foreach ($sales as $index => $row) {
if (!in_array($row['salesID'], $leader_board)) {
$new_row = array('Name' => $row['user_first'] . ' ' . $row['user_last'], 'SignUps' => 1, 'Sales' => $row['price']);
$leader_board[$row['salesID']] = $new_row;
} else {
$leader_board[$row['salesID']]['SignUps'] += 1;
$leader_board[$row['salesID']]['Sales'] += $row['price'];
}
}
您可以像下面這樣做(我僅根據您的輸入和預期輸出給出答案,而不是根據您嘗試的代碼):-
$final_array = array();
foreach($sales as $sale){
$final_array[$sale['id']]['Name'] = $sale['user_first']." ".$sale['user_last'];
$final_array[$sale['id']]['Sales'] = (isset($final_array[$sale['id']]['Sales'])) ? $final_array[$sale['id']]['Sales']+ $sale['price'] : $sale['price'];
$final_array[$sale['id']]['Signups'] = (isset($final_array[$sale['id']]['Signups'])) ? $final_array[$sale['id']]['Signups']+ 1 : 1;
}
krsort($final_array);// Sort array by key in reverse order
print_r($final_array);
參考:- krsort()
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