php random images from a folder

澳洲大头

Ever wanted to display display a random avatar or banners on your forum or website? Continue reading to find out how...

The Script

Here's the script. Call it something like images.php:

1. <?php
   
2. Header("Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0");
   
3. Header("Expires: Thu, 19 Nov 1981 08:52:00 GMT");
   
4. Header("Pragma: no-cache");
   
5. Header("Content-Type: image/gif");
   
6. 
   
7. $dir = "Images"; // This is the folder where the images are
   
8. 
   
9. srand((double)microtime()*1000000);
   
10. $i = 0;
    
11. $dirHandle = opendir($dir); // Open the images folder
    
12. while(($im = readdir($dirHandle)))
    
13. {
    
14. if($im != ".." && $im != ".") // Don't read in the 2 folders ".." and "."
    
15. {
    
16. $image[$i] = $im; // Select an image
    
17. $i++;
    
18. }
    
19. }
    
20. closedir($dirHandle); // Close the folder
    
21. $n = rand(0,(count($image)-1));
    
22. 
    
23. if(!readfile($dir."/".$image[$n])) // Read the image
    
24. readfile($dir."error/error.gif"); // If the script can't find the directory, display this image
    
25. ?>

复制代码

And now on your page, put this:

<img src="http://www.yourdomain.com/images.php" border="0">

And there you have it! It will randomly display any image in the images folder!

Enjoy!