Php/docs/function.hrtime

• PHP Manual
• Misc. Functions
• Get the system's high resolution time

hrtime

(PHP 7 >= 7.3.0)

hrtime — Get the system's high resolution time

Description

hrtime ([ bool $get_as_number = FALSE ] ) : mixed

Returns the system's high resolution time, counted from an arbitrary point in time. The delivered timestamp is monotonic and can not be adjusted.

Parameters

get_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 get_as_number is false. Otherwise the nanoseconds are returned as int (64bit platforms) or float (32bit platforms).

Examples

Example #1 hrtime() usage

<?phpecho 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