2008/7/31 <[EMAIL PROTECTED]>:
> The DateInterval class needs to have a new method added to it to display the
> actual difference between the dates (2 days. 10 months. 3 years).
> Or date_diff returns a string e.g <?php echo date_diff($date, $other_date);
> ?> would output 3 days
> --------------------------------------------------
> From: "Richard Quadling" <[EMAIL PROTECTED]>
> Sent: Thursday, July 31, 2008 5:41 PM
> To: <[EMAIL PROTECTED]>
> Cc: "PHP Documentation ML" <phpdoc@lists.php.net>
> Subject: Re: [PHP-DOC] date_diff
>
>> 2008/7/31 <[EMAIL PROTECTED]>
>>>
>>> Hi everybody!
>>>
>>> This might be the right mailing list and it might not be.
>>>
>>> I'm having a problem getting date_diff to work.
>>> I know date_diff accepts 2 DateTime objects and returns a DateInterval
>>> which I var_dump but it shows nothing
>>> Help is required!
>>>
>>> Regards
>>> Andy
>>>
>>> Heres my code:
>>>
>>> <?php
>>>
>>> $date = new DateTime("28-July-2008");
>>> $other = new DateTime("31-July-2008");
>>>
>>> $diff = date_diff($date, $other);
>>>
>>> echo '<br />date: ';
>>> var_dump($date);
>>>
>>> echo '<br /><br />other: ';
>>> var_dump($other);
>>>
>>> echo '<br /><br />diff: ';
>>> var_dump($diff);
>>>
>>> echo '<br /><br />get_class_methods - DateInterval : ';
>>> $class_methods = get_class_methods(new DateInterval('P2Y2M2D'));
>>> foreach ($class_methods as $method_name) {
>>> echo "$method_name(), ";
>>> }
>>>
>>> echo '<br /><br />get_class_methods - DateTime : ';
>>> $class_methods = get_class_methods(new DateTime("31-July-2008"));
>>> foreach ($class_methods as $method_name) {
>>> echo "$method_name(), ";
>>> }
>>>
>>> ?>
>>>
>>> Heres my output:
>>>
>>>
>>> date: object(DateTime)#1 (3) { ["date"]=> string(19) "2008-07-28
>>> 00:00:00" ["timezone_type"]=> int(3) ["timezone"]=> string(13)
>>> "Europe/London" }
>>>
>>> other: object(DateTime)#2 (3) { ["date"]=> string(19) "2008-07-31
>>> 00:00:00" ["timezone_type"]=> int(3) ["timezone"]=> string(13)
>>> "Europe/London" }
>>>
>>> diff: object(DateInterval)#3 (0) { }
>>>
>>> get_class_methods - DateInterval : __construct(), format(),
>>> createFromDateString(),
>>>
>>> get_class_methods - DateTime : __construct(), __wakeup(), __set_state(),
>>> createFromFormat(), getLastErrors(), format(), modify(), add(), sub(),
>>> getTimezone(), setTimezone(), getOffset(), setTime(), setDate(),
>>> setISODate(), setTimestamp(), getTimestamp(), diff(),
>>>
>>>
>>
>> <?php
>> $date = new DateTime("28-July-2008");
>> $other = new DateTime("31-July-2008");
>> $interval = date_diff($date, $other, True);
>> date_add($date, $interval);
>> var_dump($date);
>> date_add($date, $interval);
>> var_dump($date);
>>
>>
>> outputs ...
>>
>> object(DateTime)#1 (3) {
>> ["date"]=>
>> string(19) "2008-07-31 00:00:00"
>> ["timezone_type"]=>
>> int(3)
>> ["timezone"]=>
>> string(13) "Europe/London"
>> }
>> object(DateTime)#1 (3) {
>> ["date"]=>
>> string(19) "2008-08-03 00:00:00"
>> ["timezone_type"]=>
>> int(3)
>> ["timezone"]=>
>> string(13) "Europe/London"
>> }
>>
>> So, I can get the difference of 2 dates into an interval. I can then
>> add that interval to other dates.
>>
>> I can't determine the value of the interval though. No interface for that.
>>
>> --
>> -----
>> Richard Quadling
>> Zend Certified Engineer : http://zend.com/zce.php?c=ZEND002498&r=213474731
>> "Standing on the shoulders of some very clever giants!"
>>
>
I would have thought that the difference would be returned in the same
format as you would supply when you wanted to make a dateinterval
(i.e. P3D) maybe.
--
-----
Richard Quadling
Zend Certified Engineer : http://zend.com/zce.php?c=ZEND002498&r=213474731
"Standing on the shoulders of some very clever giants!"
