我在PHP中有数组，其中包含我想要添加到该日期的日期和天数。当我循环这些日期并添加指定的数量时，每个循环的[date]值会随着循环的每次传递而增加。这是我的阵列......
Array
(
[0] => Array
(
[date] => DateTime Object
(
[date] => 2017-10-10 06:00:00.000000
[timezone_type] => 2
[timezone] => GMT
)
[daysToAdd] => 3
)
[1] => Array
(
[date] => DateTime Object
(
[date] => 2017-10-10 06:00:00.000000
[timezone_type] => 2
[timezone] => GMT
)
[daysToAdd] => 5
)
[2] => Array
(
[date] => DateTime Object
(
[date] => 2017-10-10 06:00:00.000000
[timezone_type] => 2
[timezone] => GMT
)
[daysToAdd] => 10
)
)
我将所有这些数据传递给一个处理它的函数......
->processDates($data);
我的PHP函数内部......
foreach($array['dates'] as $day){
$originalDateTime = $day['date']; # original dateTime
$dateTime = $day['date']; # the dateTime as a new var
$dateTime = $dateTime->modify('+'.$day['daysToAdd'].' days'); // modify the dateTime
print_r([
'originalDate'=>$originalDateTime,
'newDate'=>$dateTime,
]);
}
当第一个元素在函数内部运行时会发生这种情况......
!!! The original date is also incremented by the value passed when I added it back to the array, even though i set it as a completely unmodified variable inside of the function !!!
Array
(
[originalDate] => DateTime Object
(
[date] => 2017-10-13 06:00:00.000000
[timezone_type] => 2
[timezone] => GMT
)
[newDate] => DateTime Object
(
[date] => 2017-10-13 06:00:00.000000
[timezone_type] => 2
[timezone] => GMT
)
)
This is what happens when the second element is ran inside of the function...
Array
(
[originalDate] => DateTime Object
(
[date] => 2017-10-18 06:00:00.000000
[timezone_type] => 2
[timezone] => GMT
)
[newDate] => DateTime Object
(
[date] => 2017-10-18 06:00:00.000000
[timezone_type] => 2
[timezone] => GMT
)
)
这就是第3次迭代发生的事情......
Array
(
[originalDate] => DateTime Object
(
[date] => 2017-10-28 06:00:00.000000
[timezone_type] => 2
[timezone] => GMT
)
[newDate] => DateTime Object
(
[date] => 2017-10-28 06:00:00.000000
[timezone_type] => 2
[timezone] => GMT
)
)
每次我遍历数组时，原始日期时间都被 - ＆gt;修改搞砸了。如何防止这种情况，以便每个循环完全重置并使用传入的实际数据。我需要['originalDate']维持原来设置为“2017-10-10 06：00：00.000000”... < / p>
感谢。