无论你的数据库引擎或你的PHP代码将必须在日期范围内循环。
下面是一些PHP代码来进行求和。日计数存储在year-month
,以避免在广泛的日期范围内有一个巨大的阵列。
<?php
// Get the date ranges from the database, hardcoded for example
$dateRanges[0][0] = mktime(0, 0, 0, 1, 18, 2009);
$dateRanges[0][1] = mktime(0, 0, 0, 1, 21, 2009);
$dateRanges[1][0] = mktime(0, 0, 0, 1, 19, 2009);
$dateRanges[1][1] = mktime(0, 0, 0, 1, 20, 2009);
$dateRanges[2][0] = mktime(0, 0, 0, 1, 20, 2009);
$dateRanges[2][1] = mktime(0, 0, 0, 1, 20, 2009);
for ($rangeIndex = 0; $rangeIndex < sizeof($dateRanges); $rangeIndex++)
{
$startDate = $dateRanges[$rangeIndex][0];
$endDate = $dateRanges[$rangeIndex][1];
// Add 60 x 60 x 24 = 86400 seconds for each day
for ($thisDate = $startDate; $thisDate <= $endDate; $thisDate += 86400)
{
$yearMonth = date("Y-m", $thisDate);
$day = date("d", $thisDate);
// Store the count by year-month, then by day
$months[$yearMonth][$day]++;
}
}
foreach ($months as $yearMonth => $dayCounts)
{
foreach ($dayCounts as $dayNumber => $dayCount)
{
echo $yearMonth . "-" . $dayNumber . ": " . $dayCount . "<br>";
}
}
?>
非常感谢文森特 - 看起来很完美!但有一个问题,是否有自动填充日期?它会跨越多年,所以我需要它几乎循环显示每个日期,或什么... :( 谢谢 – Nick 2009-06-17 09:40:47