PHP program to print the timestamp of the start of the request

Program/Source Code:

The source code to print the timestamp of the start of the request is given below. The given program is compiled and executed successfully.

<?php
//PHP program to print the timestamp 
//of the start of the request.

$requestTime = $_SERVER['REQUEST_TIME'];

printf("Timestamp: %s<br>", $requestTime);
?>

Output:

Timestamp: 1604073329

Explanation:

In the above program, we used $_SERVER[REQUEST_TIME'] superglobal that returns the timestamp of the start of the request, which is assigned to the variable $request. After that, we printed the timestamp using printf() on the webpage.