hrtime
(PHP 7 >= 7.3.0)
hrtime — Get the system's high resolution time
说明
Returns the system's high resolution time, counted from an arbitrary point in time. The delivered timestamp is monotonic and can not be adjusted.
返回值
Returns an array of integers in the form [seconds, nanoseconds], if the parameter get_as_number is false. Otherwise the nanoseconds are returned as integer (64bit platforms) or float (32bit platforms).
范例
Example #1 hrtime() usage
<?php
echo hrtime(true), PHP_EOL;
print_r(hrtime());
?>
以上例程的输出类似于：
10444739687370679
Array
(
[0] => 10444739
[1] => 687464812
)
参见
- The High resolution timing extension
