我有一个这样的数组：
Array
(
[0] => Array
(
[start_date] => 2010-09-16
)
[1] => Array
(
[end_date] => 2010-10-16
)
[2] => Array
(
[start_date] => 2011-12-24
)
[3] => Array
(
[end_date] => 2012-01-23
)
[4] => Array
(
[start_date] => 2012-11-10
)
[5] => Array
(
[end_date] => 2012-12-10
)
[6] => Array
(
[start_date] => 2013-05-14
)
[7] => Array
(
[end_date] => 2013-06-13
)
[8] => Array
(
[start_date] => 2014-10-20
)
[9] => Array
(
[end_date] => 2014-11-19
)
);
我已经编写了以下foreach循环来迭代数组，在foreach循环中，我希望通过使用while loop到strtotime（参考本文）来获得开始日期和结束日期之间的日期
foreach ($dateArray as $key => $data) {
$start_date = $dateArray[$key]['start_date'];
$end_date = $dateArray[$key]['end_date'];
while (strtotime($start_date) <= strtotime($end_date)) {
echo "$start_date'n";
$start_date = date("Y-m-d", strtotime("+1 day", strtotime($start_date)));
}
}
但加载页面并显示错误输出需要花费大量时间，例如：
1970-01-02
1970-01-03
1970-01-04
1970-01-05
1970-01-06
1970-01-07
.
.
.
等等…
但如果我把硬代码值传递给它，比如：
foreach ($dateArray as $key => $data) {
$start_date = $dateArray[$key]['start_date'];
$end_date = $dateArray[$key]['end_date'];
while (strtotime('2009-12-06') <= strtotime('2020-12-31')) {
echo "$start_date'n";
$start_date = date("Y-m-d", strtotime("+1 day", strtotime($start_date)));
}
}
然后它运行良好，并显示出适当的结果。
如有任何帮助，我们将不胜感激。
$array = array_chunk($dateArray,2);
foreach ($array as $key => $data) {
$start_date = data[0]['start_date'];
$end_date =data[1]['end_date'];
while (strtotime($start_date) <= strtotime($end_date)) {
echo "$start_date'n";
$start_date = date("Y-m-d", strtotime("+1 day", strtotime($start_date)));
}
}
您可以像这样使用
foreach ($dateArray as $key => $data) {
if ($key % 2 == 0) {
if ($end_date != '') {
$end_date = '';
}
}
if (isset($dateArray[$key]['start_date'])) {
$start_date = $dateArray[$key]['start_date'];
}
if (isset($dateArray[$key]['end_date'])) {
$end_date = $dateArray[$key]['end_date'];
}
if ($start_date != '' && $end_date != '') {
while (strtotime($start_date) <= strtotime($end_date)) {
echo "$start_date'n";
$start_date = date("Y-m-d", strtotime("+1 day", strtotime($start_date)));
}
}
}
这里的问题是你试图访问一个你无法访问的值。你试图为每个迭代做的是：
[0]['开始日期']
[0]['结束日期']
对于循环的每次迭代，从数组结构来看，它应该是：
[0]['开始日期']
[1] 【结束日期】
如果你总是知道结束日期在它的下一次迭代中，你可以做这样的事情：
for($x = 0; $x < count($dateArray); $x = $x + 2)
{
if(isset($dateArray[$x + 1]))
{
$start_date = $dateArray[$x]['start_date'];
$end_date = $dateArray[$x + 1]['end_date'];
//preform calculation
while (strtotime($start_date) <= strtotime($end_date)) {
echo "$start_date'n";
$start_date = date("Y-m-d", strtotime("+1 day", strtotime($start_date)));
}
}
}
但是如果你想使用当前的代码，你应该以不同的方式存储数组：
[0] => Array
(
[start_date] => 2010-09-16
[end_date] => 2010-10-16
)