PHP `DateTime::days` returns trash?

问题

PHP Class DateInterval has a property "days". According to the manual it returns "Total number of days the interval spans. If this is unknown, days will be FALSE."

In my case the code:

$d = new DateInterval('P1Y'); 
echo $d->days;

returns -99999

and a code like this

$a = DateTime::createFromFormat("d.m.Y", "01.01.2010");
$b = DateTime::createFromFormat("d.m.Y", "03.01.2010");

$d = $b->diff($a);
echo $d->days;

returns 6015

Did I misunderstand something?

回答1:

DateInterval is buggy on windows platform. See bug #51183. The official answer seems to be "use VC9 builds instead for now".

回答2:

I just run your examples and they should work. Specifically I got:

    $d = new DateInterval('P1Y');
    var_dump($d->days);
    // result: int 0


    $a = DateTime::createFromFormat("d.m.Y", "01.01.2010");
    $b = DateTime::createFromFormat("d.m.Y", "03.01.2010");

    $d = $b->diff($a);
    var_dump($d->days);
    // result: int 2

I'm running XAMPP for Linux 1.7.3a with PHP 5.3.1 on Linux Mint 10.

回答3:

Can u please tell me your exact solution you need...

I have used the code below,

$interval = new DateInterval('P2Y4DT6H8M');

echo $interval->d;

it gives the o/p as 4

if i use like this,

$interval = new DateInterval('P2Y');

echo $interval->d;

it gives o/p as 0

So it will return the day u have given in Dateinterval() otherwise it will return zero..

U tell me ur exact requirement please.......... :)

来源：https://stackoverflow.com/questions/4933441/php-datetimedays-returns-trash

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php

datetime

php-5.3