Homestar Runner Wiki Forum

/paired/
   /av.png/
      1.png
      2.jpg
      3.gif
      4.png
   /sig.png/
      /*
      Contents with the same name as the other directory
      */
   dataDump.txt /*This file is only temporary and exists between the first script's
         execution and the second script's execution*/

<?php

$dataHold = '../pairedData.txt';
$dirHandle = opendir('./');
$dirContents = array();
while($dirItem = readdir($dirHandle)){
   if(is_file($dirItem) && $dirItem != 'index.php') $dirContents[] = $dirItem;
}

if(!file_exists($dataHold)){
   $numberOfItems = sizeof($dirContents) - 1;
   $displayImage = './' . $dirContents[rand(0, $numberOfItems)];

   $mime = getimagesize($displayImage);
   $mime = image_type_to_mime_type($mime[2]);
   
   $dataDump = array('mime' => $mime, 'display' => $displayImage);
   $fh = fopen($dataHold, 'w');
   fwrite($fh, serialize($dataDump));
   fclose($fh);
}else{
   $fh = fopen($dataHold, 'r');
   $dataDump = unserialize(fread($fh, filesize($dataHold)));
   fclose($fh);
   $mime = $dataDump['mime'];
   $displayImage = $dataDump['display'];
   unlink($dataHold);
}

header('Content-type: ' . $mime);
readfile($displayImage);

?>