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php计算到指定日期还有多少天的方法

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Release: 2016-06-13 09:07:13
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php计算到指定日期还有多少天的方法

 本文实例讲述了php计算到指定日期还有多少天的方法。分享给大家供大家参考。具体如下:

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function countdays($d)

{

$olddate = substr($d, 4);

$newdate = date(Y) ."".$olddate;

$nextyear = date(Y)+1 ."".$olddate;

if($newdate > date("Y-m-d"))

{

$start_ts = strtotime($newdate);

$end_ts = strtotime(date("Y-m-d"));

$diff = $end_ts - $start_ts;

$n = round($diff / 86400);

$return = substr($n, 1);

return $return;

}

else

{

$start_ts = strtotime($nextyear);

$end_ts = strtotime(date("Y-m-d"));

$diff = $end_ts - $start_ts;

$n = round($diff / 86400);

$return = substr($n, 1);

return $return;

}

}

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