MongoDate::__construct
(PECL mongo >= 0.8.1)
MongoDate::__construct — Creates a new date.
Description
public MongoDate::__construct
([ int
$sec = time()
[, int $usec = 0
]] )Creates a new date. If no parameters are given, the current time is used.
Parameters
-
sec -
Number of seconds since January 1st, 1970.
-
usec -
Microseconds. Please be aware though that MongoDB's resolution is milliseconds and not microseconds, which means this value will be truncated to millisecond resolution.
Return Values
Returns this new date.
Examples
Example #1 MongoDate::__construct() example
This example demonstrates creating a new date with the current time and a new date with a given time.
<?php
$d = new MongoDate();
echo "$d\n";
$d = new MongoDate(1234567890);
echo "$d\n";
$d = new MongoDate(strtotime("2009-05-01 00:00:01"));
echo "$d\n";
?>
The above example will output something similar to:
0.23660600 1235685067 0.00000000 1234567890 0.00000000 1241150401
Коментарии
Please note that the second parameter should be a microseconds value, not a miliseconds one, as stated in the documentation.
I am using the code below to show you what I mean:
<?php
$example = new DateTime('2013-09-22T10:41:44.451999');
$seconds = $example->getTimestamp();
// this is what documentation misleads you to think is needed
$miliseconds = floor($example->format('u') / 1000);
// this is what you should really use
$microseconds = $example->format('u');
$fullToString = $example->format('Y-m-d\TH:i:s.uP');
$collection->insert(array(
'timeMicroseconds' => new MongoDate($seconds, $microseconds),
'toString' => $fullToString,
));
$collection->insert(array(
'timeMiliseconds' => new MongoDate($seconds, $miliseconds),
'toString' => $fullToString,
));
?>
Let's take a look in the database to see what is really stored:
{
"_id" : ObjectId("523f07cfc2b581eb7f069b1d"),
"timeMicroseconds" : ISODate("2013-09-22T07:41:44.451Z"),
"toString" : "2013-09-22T10:41:44.451999+03:00"
}
{
"_id" : ObjectId("523f07cfc2b581eb7f069b1e"),
"timeMiliseconds" : ISODate("2013-09-22T07:41:44.000Z"),
"toString" : "2013-09-22T10:41:44.451999+03:00"
}