ID:               48187
 User updated by:  wavetrex at gmail dot com
 Reported By:      wavetrex at gmail dot com
-Status:           Feedback
+Status:           Open
 Bug Type:         Date/time related
 Operating System: Windows 2003 Server
 PHP Version:      5.3.0RC2
 New Comment:

float(1241919300.3593)
float(1241709350.3736)
int(1241919300)
int(1241919300)
string(25) "2009-05-10T04:35:00+03:00"
string(25) "2009-05-10T04:35:00+03:00"

( http://wt.ath.cx/jani.php )

Note: 1241709350 -> this value seems to stay almost unchanged over time

(look at my first submission: string(21) "0.25882200 1241709345" )

When I reported the difference was ~50000 seconds, now it's over
200.000


Previous Comments:
------------------------------------------------------------------------

[2009-05-09 20:59:00] j...@php.net

What is the output of the script I provided?

------------------------------------------------------------------------

[2009-05-09 06:58:21] wavetrex at gmail dot com

@jani:

I'm using microtime() multiple times to determine how long some 
complex parts of the script take to execute, when I noticed weird 
differences.

Also, while the second microtime() call after diff() is wrong, the 
third seems to be ok, just like calling the function resets some 
internal variable that was broken during execution of diff()

I prepared a script on my server:
http://wt.ath.cx/diff.php
The code for this script is here:
http://wt.ath.cx/diff.txt

Server configuration:
http://wt.ath.cx/phpinfo.php

Time difference between the two calls:

Expected result:
3.814697265625E-5 (a few microseconds)
Actual result:
-142455.45035195 (??)

Your script:
http://wt.ath.cx/jani.php
... also has the error.

If this probably occurs on my server, I'm thinking... it might be 
timezone related ? I'm sure yours and mine are different. (check my 
phpinfo.php to see date/time settings)

P.S.
While investigating, I noticed that in some rare cases it doesn't 
happen, and after Ctrl-R it gives the erroned value again. Try 
reloading the page a few times in case 1st time it shows the correct 
values.

I'll keep experimenting with the new 5.3.0 time functions and see if 
some other errors appear.

------------------------------------------------------------------------

[2009-05-09 04:15:40] j...@php.net

Try this script instead: (I can't reproduce this..)

<?php
// two arbitrary dates
$date1=new DateTime("2005-07-23");
$date2=new DateTime("2006-02-14");

$begin_u = microtime(true);
$begin_t = time();
$begin_a = date(DATE_ATOM);

var_dump($date1->diff($date2));

var_dump($begin_u, microtime(true));
var_dump($begin_t, time());
var_dump($begin_a, date(DATE_ATOM));
?>


------------------------------------------------------------------------

[2009-05-08 05:42:58] wavetrex at gmail dot com

Description:
------------
calling DateTime::diff() seems to corrupt the result returned by
microtime(), so it returns the wrong time after this function has been
called

Reproduce code:
---------------
<?php
// two arbitrary dates
$date1=new DateTime("2005-07-23");
$date2=new DateTime("2006-02-14");

echo "<pre>";
var_dump(microtime());
var_dump(time());
var_dump(date(DATE_ATOM));

var_dump($date1->diff($date2));

var_dump(microtime());
var_dump(time());
var_dump(date(DATE_ATOM));
echo "</pre>";

?>

Expected result:
----------------
Expecting the 2nd microtime to be slightly bigger ( by a few
miliseconds ) than first.

instead, it's a totally wrong 50000 seconds distance (or maybe other
arbitrary value)

date() and time() seem to be unaffected


Actual result:
--------------
before calling diff:
string(21) "0.98425000 1241761004"

after it:
string(21) "0.25882200 1241709345"



------------------------------------------------------------------------


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