Oop php日期时间差返回零
我只是想知道为什么DateTime::diff返回零。我预计会在5天内回来,肯定是我做错了什么。请这里的人更正我的密码Oop php日期时间差返回零,oop,Oop,我只是想知道为什么DateTime::diff返回零。我预计会在5天内回来,肯定是我做错了什么。请这里的人更正我的密码 $oneYearPlus = str_replace(':', '-', date('Y:m:d', strtotime('+1 year', strtotime('now')))); var_dump($oneYearPlus); $date = new DateTime($oneYearPlus); ## 2015-09-26 var_dump($da
$oneYearPlus = str_replace(':', '-', date('Y:m:d', strtotime('+1 year', strtotime('now'))));
var_dump($oneYearPlus);
$date = new DateTime($oneYearPlus); ## 2015-09-26
var_dump($date); // Output
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object(DateTime)[18]
public 'date' => string '2015-09-27 00:00:00' (length=19)
public 'timezone_type' => int 3
public 'timezone' => string 'Europe/Moscow' (length=13)
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$warning = $date->sub(new DateInterval('P5D')); ## 2014-09-21
var_dump($warning); // Output
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object(DateTime)[18]
public 'date' => string '2015-09-22 00:00:00' (length=19)
public 'timezone_type' => int 3
public 'timezone' => string 'Europe/Moscow' (length=13)
--------------------------------
$interval = $warning->diff($date);
var_dump($interval->format('%a days')); ## output 0 days
$date获得减去的值(返回相同的值),因此$warning&$date具有相同的值-
要解决此问题。。。我只是克隆了$date变量;-)而且它很有效
$oneYearPlus = str_replace(':', '-', date('Y:m:d', strtotime('+1 year', strtotime('now'))));
var_dump($oneYearPlus);
$date = new DateTime($oneYearPlus); ## 2015-09-26
var_dump($date);
$clone = clone $date;
$warning = $date->sub(new DateInterval('P5D')); ## 2014-09-21
var_dump($warning);
$interval = $warning->diff($clone);
var_dump($interval->format('%a days')); ## output 0 days