PHP microtime() Function
Definition and Usage
The microtime() function returns the current Unix timestamp with microseconds. By default, this function returns a string value which contains microseconds and seconds separated by space (msec sec).
Syntax
microtime($get_as_float)
Parameters
| Sr.No |
Parameter & Description |
| 1 |
get_as_float(Optional)
This is a boolean value which is used to specify whether the result should be a floating point value or not. If you pass the boolean value true as a parameter, this function returns result as floating point value.
|
Return Values
PHP microtime() function returns the current Unix timestamp. By default this returns a string value in the form msec sec. If you pass the boolean value true as a parameter to this method, it returns the current time in seconds since the Unix epoch accurate to the nearest microsecond.
PHP Version
This function was first introduced in PHP Version 4 and, works with all the later versions.
Example
Following example demonstrates the usage of the microtime() function −
Live Demo
<?php
$time = microtime();
print($time);
?>
This will produce following result −
0.60664200 1589305212
Example
Lets try to set the get_as_float value to true −
Live Demo
<?php
$time = gettimeofday(true);
print_r($time);
?>
This will produce following result −
1589298812.5101
Example
Live Demo
<?php
$time_start = microtime(true);
usleep(100);
$time_end = microtime(true);
$time = $time_end - $time_start;
echo "Did nothing in $time seconds\n";
?>
This produces the following result −
Did nothing in 0.0018141269683838 seconds
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