The hrtime() function is an inbuilt function in PHP which returns the high-resolution time of the system.
Syntax:
mixed hrtime( bool $is_num_return );
Parameter: This function accepts a single parameter as mentioned above and described below:
- $is_num_return: It is optional parameter of Boolean type. It specifies whether it return as a single number or array. If it set to TRUE then it returns as number or as an array of integers in case of FALSE. Default value is FALSE.
Return Value: This function returns the nanoseconds or an array of integers.
Note: This function is available for PHP 7.3.0 and newer version.
Below programs illustrate the hrtime() function in PHP:
Program 1: This program sets $is_num_return to TRUE.
<?php print_r(hrtime(TRUE)); ?> |
Output:
149632499993800
Program 2: This program does not set $is_num_return value. It means it takes the default value.
<?php print_r(hrtime()); ?> |
Output:
Array ( [0] => 150389 [1] => 914027500 )
Reference: https://www.php.net/manual/en/function.hrtime.php
