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Show random image in PHP

/ Published in: PHP
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Change $dir to image folder

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  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. $dir = "img/backgrounds";
  8. //$imglist = "";
  9. srand((double)microtime()*1000000);
  10. $i = 0;
  11. if(is_dir($dir)){
  12.     if($dh = opendir($dir)){ 
  13.         while(($file = readdir($dh)) !== false){
  14.             if($file != '..' && $file != '.'){
  15.                 $image[$i] = $file;
  16.                 $i++;
  17.             }
  18.         }
  19.         closedir($dh);
  20.     }
  21. }
  22. $n = rand(0,(count($image)-1));
  23.  
  24. if(!readfile($dir."/".$image[$n])) // Read the image 
  25. readfile($dir."error/error.gif"); // If the script can't find the directory, display this image
  26. ?>

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