我想创建一个从开始日期到结束日期的日期时间变量数组。我使用以下函数来创建值数组。
<?php
class utility
{
// constructor
function __construct()
{
}
/* Creates an array of dates in YYYY-MM-DD format
* INPUT:
* @ From
* @ To
* OUTPUT:
* @ ArrayOfDates
*/
function createDateRangeArray($strDateFrom,$strDateTo)
{
$aryRange = array();
$iDateFrom=mktime(1,0,0,substr($strDateFrom,5,2), substr($strDateFrom,8,2),substr($strDateFrom,0,4));
$iDateTo=mktime(1,0,0,substr($strDateTo,5,2), substr($strDateTo,8,2),substr($strDateTo,0,4));
if ($iDateTo>=$iDateFrom)
{
array_push($aryRange,date('Y-m-d',$iDateFrom)); // first entry
while ($iDateFrom<$iDateTo)
{
$iDateFrom+=86400; // add 24 hours
array_push($aryRange,date('Y-m-d',$iDateFrom));
}
}
return $aryRange;
}
}?>
当我从 2016-01-01 到 2016-01-06 询问数组时，生成的数组是正确的：
From: 2016-01-01
To: 2016-01-06
Number of dates: 6
2016-01-01,2016-01-02
2016-01-02,2016-01-03
2016-01-03,2016-01-04
2016-01-04,2016-01-05
2016-01-05,2016-01-06
问题：
如果周期是从 2016-01-06 到 2016-01-09，则数组完全错误。
From: 2016-01-06
To: 2015-12-31
Number of dates: 0
我错过了什么？
支持
可以使用以下代码测试函数。
<?php
require_once 'utility.php';
$utility = new utility();
$yearFrom = 2016; $monthFrom = 01; $dayFrom = 06;
$yearTo = 2016; $monthTo = 01; $dayTo = 09;
$from = new DateTime($yearFrom.'-'.$monthFrom.'-'.$dayFrom);
echo "<div>From: <b>". $from->format('Y-m-d') . "</b> </div>";
$to = new DateTime($yearTo.'-'.$monthTo.'-'.$dayTo);
echo "<div>To: <b>" . $to->format('Y-m-d') . "</b> </div>";
$arrayDate = $utility->createDateRangeArray($from->format('Y-m-d'),$to->format('Y-m-d'));
echo "<div> Number of dates: " . count($arrayDate) . " </div>" ;
for ($i = 0; $i < count($arrayDate)-1 ; $i++)
{
echo "<div> " . $arrayDate[$i] . "," . $arrayDate[$i+1] . " </div>";
}
?>
编辑
我注意到，如果一天的数字是9而不是09它就可以了......
首次实例化 DataTime 对象时，您似乎遇到了类型转换问题，如输出中所示，其中To日期不正确：
From: 2016-01-06
To: 2015-12-31
Number of dates: 0
将 from 和 to 变量指定为字符串可以显式正确实例化 DateTimes：
$yearFrom = '2016'; $monthFrom = '01'; $dayFrom = '06';
$yearTo = '2016'; $monthTo = '01'; $dayTo = '09';
输出：
From: 2016-01-06
To: 2016-01-09
Number of dates: 4
2016-01-06,2016-01-07
2016-01-07,2016-01-08
2016-01-08,2016-01-09