Returns the timestamp component of this Timestamp

# MongoDB\BSON\Timestamp::getTimestamp

(mongodb >=1.3.0)

MongoDB\BSON\Timestamp::getTimestamp — Returns the timestamp component of this Timestamp

### 说明

final public function MongoDB\BSON\Timestamp::getTimestamp(): int

The timestamp component of a Timestamp 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.

### 参数

此函数没有参数。

### 返回值

Returns the timestamp component of this Timestamp.

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.

### 错误／异常

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

### 参见

- » BSON Types: Timestamps

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