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The MongoDate class

(PECL mongo >=0.8.1)

Warning

This extension that defines this class is deprecated. Instead, the MongoDB extension should be used. Alternatives to this class include:

MongoDB\BSON\UTCDateTime

简介

Represent date objects for the database. This class should be used to save dates to the database and to query for dates. For example:

Example #1 Storing dates with MongoDate


<?php

// save a date to the database
$collection->save(array("ts" => new MongoDate()));

$start = new MongoDate(strtotime("2010-01-15 00:00:00"));
$end = new MongoDate(strtotime("2010-01-30 00:00:00"));

// find dates between 1/15/2010 and 1/30/2010
$collection->find(array("ts" => array('$gt' => $start, '$lte' => $end)));

?>

MongoDB stores dates as milliseconds past the epoch. This means that dates do not contain timezone information. Timezones must be stored in a separate field if needed. Second, this means that any precision beyond milliseconds will be lost when the document is sent to/from the database.

类摘要

MongoDate {

/* Fields */

public int $sec ;

public int $usec ;

/* 方法 */

public __construct ([ int $sec = time() [, int $usec = 0 ]] )

public toDateTime ( void ) : DateTime

public __toString ( void ) : string

}

MongoDate::__construct — 创建一个新的日期。
MongoDate::toDateTime — Returns a DateTime object representing this date
MongoDate::__toString — 返回该日期的字符串形式的表达

User Contributed Notes

mike at brenden dot com 12-Dec-2017 07:08


MichaelBrenden --



How do the two Mongo drivers determine if they can translate something into the ISODate format?



Does mongo.so require a class type of MongoDate, or does it determine by data returned by __toString() (i.e., "0.12345678 1234567890")?



Does mongodb.so require a class type of \MongoDB\BSON\UTCDateTime, or does it determine by data returned by __toString() (i.e., "1234567890123")?



jmikola



>> the ISODate format?



For the record, ISODate is just a helper function in the mongo shell. The actual BSON type is 0x09 in the BSON spec and is best referred to as "UTC date time".

[url]https://docs.mongodb.com/manual/core/shell-types/#return-date[/url]

[url]http://bsonspec.org/spec.html[/url]



 >> Does mongodb.so require a class type of \MongoDB\BSON\UTCDateTime, or does it determine by data returned by __toString() (i.e., "1234567890123")?



The driver requires a MongoDB\BSON\UTCDateTime object in order to encode a BSON date type. The relevant instanceof check during BSON encoding is here if you care to see it. The __toString() function exists purely as a convenience for userland applications. The driver does not use it outside of tests.

[url]https://github.com/mongodb/mongo-php-driver/blob/1.3.4/src/bson-encode.c#L215[/url]



The legacy mongo.so driver is similar in that it requires a MongoDate object in order to encode a BSON date type (relevant code is here).

[url]https://github.com/mongodb/mongo-php-driver-legacy/blob/1.6.16/bson.c#L273[/url]

Philipp 29-Nov-2016 11:15


This extension is deprecated, but some people still have to use it.



Please, note that properties (sec, usec) are read-only.



You have to do something like this:



<?php



$d = new \MongoDate();



echo "\n" . $d->toDateTime()->format(\DateTime::ISO8601);



// move to future for 125 seconds

$d = new \MongoDate($d->sec + 125, $d->usec);



echo "\n" . $d->toDateTime()->format(\DateTime::ISO8601);



?>

richard at securebucket dot com 17-Feb-2012 03:32


I wanted a way to check the age of a record.  This code will calculate the time between the creation date of the record, and return the seconds.  I use it for caching pages similar to the max-age header in a browser.  If the record is older, than my limit it deletes itself.





<?php


function microtime_diff( $start, $end=NULL ) { 


        if( !$end ) { 


            $end= microtime(); 


        } 


        list($start_usec, $start_sec) = explode(" ", $start); 


        list($end_usec, $end_sec) = explode(" ", $end); 


        $diff_sec= intval($end_sec) - intval($start_sec); 


        $diff_usec= floatval($end_usec) - floatval($start_usec); 


        return floatval( $diff_sec ) + $diff_usec; 


} 





microtime_diff($cache['stamp']->sec);


?>

jhonnydcano at yahoo dot com 15-Mar-2010 11:43


For showing a human readable MongoDate, you can use something like this:





<?php


date('Y-M-d h:i:s', $yourDate->sec);


?>

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The MongoDate class

简介

类摘要

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