PHP 7.1.18 Released

MongoDB\BSON\ObjectId::getTimestamp

(mongodb >=1.2.0)

MongoDB\BSON\ObjectId::getTimestampReturns the timestamp component of this ObjectId

说明

final public int 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.

Note: 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.

参数

此函数没有参数。

返回值

Returns the timestamp component of this ObjectId.

错误/异常

范例

Example #1 MongoDB\BSON\ObjectId::getTimestamp() example

<?php

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

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

?>

以上例程的输出类似于:

integer(1484854719)
integer(42)
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