(mongodb >=1.0.0)
MongoDB\BSON\Timestamp::__construct — Construct a new Timestamp
$increment, int $timestamp)increment (int)32-bit integer denoting the incrementing ordinal for operations within a given second.
timestamp (int)32-bit integer denoting seconds since the Unix epoch.
示例 #1 MongoDB\BSON\Timestamp::__construct() example
<?php
$timestamp = new MongoDB\BSON\Timestamp(1234, 5678);
?>以上示例会输出：
object(MongoDB\BSON\Timestamp)#1 (2) {
["increment"]=>
int(1234)
["timestamp"]=>
int(5678)
}