在Unix纪元php中获取纳秒时间戳[重复]

Question

This question already has an answer here:

• How to get time in PHP with nanosecond precision? 3 answers

PHP strtotime gives unix timestamp, but how to get the nanosecond timestamp in unix epoch. I want to get it to store it in my influxdb.

</div>

Answer 1

PHP does not provide a function that has higher precision than microseconds, unfortunately. The UNIX timestamp, according to the standard, is stored in microseconds.
However, there is a platform-dependent solution. Use

system('date %N');

on a linux machine. See man date or this page for more info.