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!"
