MongoDB\BSON\TimestampInterface::getTimestampReturns the timestamp component of this TimestampInterface 説明
abstract public int MongoDB\BSON\TimestampInterface::getTimestamp()
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 TimestampInterface. 警告
On 32-bit systems this method may return a negative number. Although the increment and timestamp parts of the BSON timestamp type consists of two unsigned 32-bit values, PHP can not represent these on 32-bit platforms. 参考
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