MongoDB\BSON\ObjectId::getTimestamp
(mongodb >=1.2.0)
MongoDB\BSON\ObjectId::getTimestamp — Returns the timestamp component of this ObjectId
説明
final public integer MongoDB\BSON\ObjectId::getTimestamp
( void
)
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。
返り値
Returns the timestamp component of this ObjectId.
エラー / 例外
- 引数のパースに失敗した場合に MongoDB\Driver\Exception\InvalidArgumentException をスローします。
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)
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