hrtime
(PHP 7 >= 7.3.0, PHP 8)
hrtime — Get the system's high resolution time
Description
hrtime(bool
$as_number = false): array|int|float|falseReturns the system's high resolution time, counted from an arbitrary point in time. The delivered timestamp is monotonic and can not be adjusted.
Parameters
-
as_number -
Whether the high resolution time should be returned as array or number.
Return Values
Returns an array of integers in the form [seconds, nanoseconds], if the
parameter as_number is false. Otherwise the nanoseconds
are returned as int (64bit platforms) or float
(32bit platforms).
Returns false on failure.
Examples
Example #1 hrtime() usage
<?php
echo hrtime(true), PHP_EOL;
print_r(hrtime());
?>
The above example will output something similar to:
10444739687370679
Array
(
[0] => 10444739
[1] => 687464812
)
See Also
- The High resolution timing extension
- microtime() - Return current Unix timestamp with microseconds
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