hrtime

Definition and usage

hrtime() function returns the high resolution time of the system.

This time is often used for performance measurements because it provides higher precision than conventional time functions such as time().

Example

Return to the system's high resolution time:

 < html >
< body >
<?php
echo hrtime ( true ) , PHP_EOL ;
print_r ( hrtime ( ) ) ;
?>
</ body >
</ html >

The output of the above code might look like this:

 749040731418900
Array
(
    [ 0 ] => 749040
    [ 1 ] => 731419500
)

grammar

 hrtime ( return_as_num )