(mongodb >=1.2.0)
MongoDB\BSON\ObjectID::getTimestamp — Returns the timestamp component of this ObjectID
The timestamp component of an ObjectID is its first four bytes, which denote the number of seconds since the Unix epoch. This value is read as an unsigned 32-bit integer with big-endian byte order.
This function has no parameters.
Returns the timestamp component of this ObjectID.
Example #1 MongoDB\BSON\ObjectID::getTimestamp() example
<?php
var_dump((new MongoDB\BSON\ObjectId())->getTimestamp());
var_dump((new MongoDB\BSON\ObjectId('0000002a0000000000000000'))->getTimestamp());
?>
The above example will output something similar to:
integer(1484854719) integer(42)