我有一個日期數組。我必須確定哪個日期屬于哪個時期。為此，我有另外兩個數組-這些周期的一個帶有開始日期，另一個帶有結束日期。我嘗試了日期和DatePeriod類的foreach循環，但無法正常工作。foreach ($dates as $value) { foreach ($startdates as $key => $value1) { foreach ($enddates as $key => $value2) { if ($value > $value1 && $value < $value2) { result[$value] = $key; } } }}日期（提?。? $ dates$dates = Array ( [0] => 2011-04-11 [1] => 2011-06-28 [2] => 2011-09-26 [3] => 2012-01-02 [4] => 2012-05-12 )使用分配的鍵的開始日期（提?。? $ startdatesArray ( [10] => 2011-01-01 [20] => 2011-07-01 [30] => 2012-01-01 [40] => 2012-07-01 )分配了鍵的結束日期（摘錄）/ $ enddatesArray ( [10] => 2011-06-30 [20] => 2011-12-31 [30] => 2012-06-30 [40] => 2012-12-31 )我希望結果是一個新數組，其中$ dates數組中的日期成為鍵，開始日期和結束日期數組中的句點變為如下值：Array ( [2011-04-11] => 10 [2011-06-28] => 10 [2011-09-26] => 20 [2012-01-02] => 30 [2012-05-12] => 30 )
2 回答
波斯汪
TA貢獻1811條經驗 獲得超4個贊
因為您正在比較Ymd格式的日期，所以不需要日期/時間函數-換句話說，只需將日期視為字符串即可。
同時迭代開始和結束元素。當您找到正確的范圍時，請存儲數據并繼續進行下一個評估日期。
代碼：（演示）
$dates = ['2011-04-11', '2011-06-28', '2011-09-26', '2012-01-02', '2012-05-12'];
$startdates = [
10 => '2011-01-01',
20 => '2011-07-01',
30 => '2012-01-01',
40 => '2012-07-01'
];
$enddates = [
10 => '2011-06-30',
20 => '2011-12-31',
30 => '2012-06-30',
40 => '2012-12-31'
];
foreach ($dates as $date) {
foreach ($startdates as $key => $startdate) {
if ($date >= $startdate && $date <= $enddates[$key]) {
$result[$date] = $key;
continue 2;
}
}
$result[$date] = 'out of bounds';
}
var_export($result);
輸出：
array (
'2011-04-11' => 10,
'2011-06-28' => 10,
'2011-09-26' => 20,
'2012-01-02' => 30,
'2012-05-12' => 30,
)
精慕HU
TA貢獻1845條經驗 獲得超8個贊
您可以在主日期變量中循環使用開始日期和結束日期數組的時間段，
// combining keys and values
$temp = array_combine($startdates, $enddates);
$result = [];
// & for making changes on assigned address of variable regardless of array_walk function scope
array_walk($dates, function ($item, $key) use (&$result, $temp, $startdates) {
foreach ($temp as $k => $v) {
// comparing with start and end date range
if (strtotime($item) >= strtotime($k) && strtotime($item) <= strtotime($v)) {
// searching by value and getting key
$result[$item] = array_search($k, $startdates);
// if comes to this loop break as its never gonna come here
break;
}
}
});
array_combine —通過使用一個數組作為鍵并使用另一個數組作為其值來創建數組
array_walk —將用戶提供的函數應用于數組的每個成員
array_search —搜索數組以獲取給定值，如果成功則返回第一個對應的鍵
輸出
Array
(
[2011-04-11] => 10
[2011-06-28] => 10
[2011-09-26] => 20
[2012-01-02] => 30
[2012-05-12] => 30
)
演示。
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