php – 将DateInterval格式化为ISO8601

Y years

M months

D days

W weeks. These get converted into days,so can not be combined with D.

H hours

M minutes

S seconds

然后看看你有什么工作(http://php.net/manual/en/dateinterval.format.php),看起来你会做的是：

$dateInterval = new DateInterval( /* whatever */ );
$format = $dateInterval->format("P%yY%mM%dD%hH%iM%sS");
//P0Y0M5D0H0M0S
//now,we need to remove anything that is a zero,but make sure to not remove
//something like 10D or 20D
$format = str_replace(["M0S","H0M","D0H","M0D","Y0M","P0Y"],["M","H","D","M","P"],$format);
echo $format;
//P0M5D

现在,我做的不同之处是我总是包括月份,即使它是0.这样做的原因是分钟和月份都由M表示 – 如果我们总是包括月份,那么如果有一分钟我们知道这是几分钟.否则,我们必须做一堆逻辑,看看我们是否需要将P更改为PT,因此它知道此实例中的a M代表Minute.

例如：

// For 3 Months
new DateInterval("P3M");
// For 3 Minutes
new DateInterval("PT3M"));

但相反,我们做：

// For 3 Months
new DateInterval("P3M");
// For 3 Minutes
new DateInterval("P0M3M"));