MongoDB\BSON\ObjectId
PHP マニュアル

MongoDB\BSON\ObjectId::getTimestamp

Returns the timestamp component of this ObjectId

説明

final public int MongoDB\BSON\ObjectId::getTimestamp()

The timestamp component of an ObjectId is its most significant 32 bits, which denotes the number of seconds since the Unix epoch. This value is read as an unsigned 32-bit integer with big-endian byte order.

注意: Because PHP's integer type is signed, some values returned by this method may appear as negative integers on 32-bit platforms. The "%u" formatter of sprintf may be used to obtain a string representation of the unsigned decimal value.

パラメータ

この関数にはパラメータはありません。

戻り値

Returns the timestamp component of this ObjectId.

エラー / 例外

  • Throws MongoDB\Driver\Exception\InvalidArgumentException on argument parsing errors.

例

例1 MongoDB\BSON\ObjectId::getTimestamp example

<?php

var_dump((new MongoDB\BSON\ObjectId())->getTimestamp());

var_dump((new MongoDB\BSON\ObjectId('0000002a0000000000000000'))->getTimestamp());

?>

上の例の出力は、 たとえば以下のようになります。

integer(1484854719)
integer(42)