PHP code to make a dynamic countdown timer

Here, we will learn how to design/make a dynamic countdown time using PHP code? Here, we are setting a last date time till countdown time will run.
Submitted by IncludeHelp, on October 15, 2017 [Last updated : March 12, 2023]

PHP - Dynamic Countdown Timer

Sometimes, we need to announce something on the website or want to wish any festival to our readers then we need a kind of timer (we can say, it is countdown timer) to be displayed on the website.

In this post, we are writing PHP code that will display a countdown timer for "Diwali" on the webpage.

In this code,

  • We are using a function strtotime() which is used to artificially generate the timestamp for a selected date and time.
  • We are defining date and time for festival “Diwali”, which is known as target date time, the value is "2017-10-19 12:00:00.
  • And, as a current date time we are using now which gives current date and time.

PHP code (with HTML) to display countdown timer

<!doctype html>
		<title>PHP Countdown Timer</title>

			$diwali = strtotime("2017-10-19 12:00:00"); // or whenever the diwali is
			$diffference =($diwali-$current);
			$days=floor($diffference / (60*60*24));
			echo "$days days left on Diwali";
		<img src="<?php echo $image_url;?>">


design a countdown time in PHP

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