MongoId::getTimestamp — Gets the number of seconds since the epoch that this id was created

[sshilko]

"legacy" mongo driver provided a method http://php.net/manual/en/class.mongoid.php

getTimestamp 

to extract timestamp from mongoid's

i cant see analog in new driver
http://php.net/manual/en/class.mongodb-bson-objectid.php

is there a way to extract time from mongoId using new driver?

[jmikola]

There is not currently a method for this, but we can certainly consider adding it in a future 1.x release (e.g. 1.2). I'll make a ticket on the PHPC project this week to track the request, and cross-reference it here.

In the meantime, you should be able to use hex2bin() on the string representation of the ID (__toString() returns a 24-character hexadecimal string) and then use unpack() to extra the first four bytes. You may find the code from mongofill's MongoId implementation a helpful reference for that.

[sshilko]

thx i will use unpack, just migrated from mongo to mongodb extension, looks good so far.

[jmikola]

Tracking ticket: PHPC-552. Also, a more convenient solution may be to use hexdec() on the first 8 bytes of the ObjectID's hexadecimal representation. See: https://github.com/alcaeus/mongo-php-adapter/blob/ef2f253ba47e376ba220ba1cde753c99a51e2705/lib/Mongo/MongoId.php#L174