我正在尝试使用开始日期和今天的日期计算给定日期之间的当前完成百分比。两者之间的持续时间通过结束日期计算。这些值将在javascript中使用。startdate = 2013-01-08和end date = 2013-07-08以及今天的实时日期。为了测试，我试图转换我的结果，看看它是否返回正确的日期。代码如下:
$duration = ( ((strtotime($model['ProjectEndDate']) - 1*86400)*1000) - ((strtotime($model['StartDATE']) - 1*86400)*1000) );
echo $duration;
echo "<br>";
$burn = ((time() - 1*86400)*1000) - ((strtotime($model['StartDATE']) - 1*86400)*1000);
echo $burn;
echo "<br>";
$pBurned = $burn/$duration;
echo $pBurned*100;
echo "<br>";
$time = $time = strtotime( ($date_from + $pBurned) );
echo date("Y-m-d H:i:s", $time);
输出为
1.56348E+10
14212291000
90.901648885819
1970-01-01 01:00:00
$today = time();
$startdate = strtotime($model['StartDATE']); //
$enddate = strtotime($model['ProjectEndDate']); //
$diff_total = $enddate - $startdate;
echo $diff_total;
echo "<br>";
$diff_today = $today - $startdate;
echo $diff_today;
echo "<br>";
$percentage_date=round(($diff_today/$diff_total)*100,2);
//echo $diff_today/$diff_total;
echo $percentage_date.'%';
exit();
给出输出
15634800
14219916
90.95%
我现在要做的是计算90.95%的起始日期和返回日期
搜索计算百分比的数学。我没有开玩笑。
$today = new DateTime();
$startdate = new DateTime("2013-06-16"); //$model['StartDATE']
$enddate = new DateTime("2013-06-26"); // $model['ProjectEndDate']
$diff_total = $enddate->diff($startdate)->format("%a");
$diff_today = $today->diff($startdate)->format("%a");
$percentage_date=round(($diff_today/$diff_total)*100,2);
echo $percentage_date.'%'; // from today
获取日期的百分比
$percentage_to_get = 45;
$percentage_of_days = floor(($diff_total/100*)$percentage_to_get);
echo date('Y-m-d', strtotime( $startdate->format('Y-m-d') ." + $percentage_of_days day") );