Show random image(s) from a directory

Posted on September 21, 2008, under PHP 

Hi,

If you need to show images randomly from a directory then this script can help you.

index.php

Let’s configure some variables: $extensions, $images_folder_path & $url_to_images_folder.

<?php
// extensions to be checked

$extensions = array('jpg','jpeg','gif','png','bmp');

// images folder

$images_folder_path = '/home/site/public_html/images/';

// url to folder

$url_to_folder = 'http://www.yoursitename.com/images/';

Create the array with the URLs to the images:

// Images Array (SRC value)

$images = array();

srand((float) microtime() * 10000000); // IF PHP Version < 4.2.0

// Open directory and read images

if ($handle = opendir($images_folder_path)) {
    while (false !== ($file = readdir($handle))) {
        if ($file != "." && $file != "..") {
            
			// get file extension
			$ext = strtolower(substr(strrchr($file, "."), 1));

			if(in_array($ext, $extensions))
			{
			$images[] = $url_to_folder.$file;
			}

        }
    }
    closedir($handle);
}

Are there any images in the directory? Select randomly 2 distinctive values. If there are no images in the folder, notify the user with a message.

if(!empty($images)) // Do we have something to show?
{
$rand_key = array_rand($images, 1);

$src = $images[$rand_key];

echo "<img src='".$src."' align='absmiddle'>";

/* 
Show second image; Make sure it will not be the same as the first one;
We will remove the element of the first image from the array. This way the script will not reselect it 
*/

unset($images[$rand_key]);

$rand_key = array_rand($images, 1);

$src = $images[$rand_key];

echo "<br /><br /><img src='".$src."' align='absmiddle'>";
}
else
{
echo 'No images were found in <strong>'.$images_folder_path.'</strong>';
}
?>


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