First of all, this tutorial is mainly for the beginners who start learning programming especially PHP. If you are building some website and sometimes, you might need to display a random image per page load. It that case, you could use this method. There might be some other ways to achieve this but I find that this is the easiest way at least, for me.

<?php

$iArr = array(‘image1.jpg’, ‘image2.jpg’, ‘image3.jpg’); //create an array of image

$no = sizeof($iArr)-1;

$random = mt_rand(0, $no); //get random number between 0 and array size

$path = ‘images/’; //this is the path to your images

$ranImg = $iArr[$random]; //get random image from array

$img = $path.$ranImg; //the full image path e.g. images/image1.jpg

echo ‘<img src=”‘.$img.’” alt=”"/>’; //display the random image

?>

I believe the code is quite simple and self explained. Please feel free to share your thoughts in comments.