autoGallery

<?php
$result = "<gallerylist>\n";

if($basepath == '') {
$basepath = 'assets/galleries/';
}

if(substr($basepath, -1) != '/') {
  $basepath .= '/';
}

$dir = opendir($basepath);

$output = '';
$filelist = array();
while($entry = readdir($dir)) {
  if(!(($entry == '..')||($entry == '.')||(substr($entry, 0, 3) == 'tn_'))) {
    array_push($filelist, $entry);
  }
}

sort($filelist);

foreach($filelist as $entry) {
  $result .= "<gallery>\n";
  $result .= '   <name>' . $entry . "</name>\n";
 
  $result .= '   <thumbnail>';
  $subdir = opendir($basepath . $entry);
  while($subentry = readdir($subdir)) {
    if(substr($subentry, 0, 3) == 'tn_') {
      $result .= $basepath . $entry . '/' . $subentry;
      break;
    }    
  }
  $result .= "</thumbnail>\n";
  $result .= "</gallery>\n";
}

return $result . "</gallerylist>";
?>

function generateTN($srcfile, $tnimgpath, $tnwidth = 80, $tnheight = 80, $quality = 100) {

  $path_parts = pathinfo($srcfile);

  // Support only JPG and PNG
  if(strpos(' jpg, JPG, JPEG, jpeg', $path_parts['extension'])) {
    $sourceimg = imagecreatefromjpeg($srcfile);
  } else if(strpos(' png, PNG', $path_parts['extension'])) {
    $sourceimg = imagecreatefrompng($srcfile);
  } else {
    return NULL;
  }
  
  if($sourceimg) {
    $width = imagesx($sourceimg);
    $height = imagesy($sourceimg);
    
    // Create the thumbnail
    $shrunkwidth = round(($tnheight/$height) * $width);
    if($shrunkwidth < $tnwidth) {
      $shrunkheight = round(($tnwidth/$width) * $height);
      $snipsize = round(($shrunkheight - $tnheight) / 2);
      $shrunk = imagecreatetruecolor($tnwidth, $shrunkheight);
      imagecopyresized($shrunk, $sourceimg, 0, 0, 0, 0, $tnwidth, $shrunkheight, $width, $height);
      $targetimg = imagecreatetruecolor($tnwidth, $tnheight);
      imagecopy($targetimg, $shrunk, 0, 0, 0, $snipsize, $tnwidth, $tnheight);
    } else {
      $snipsize = round(($shrunkwidth - $tnwidth) / 2);
      $shrunk = imagecreatetruecolor($shrunkwidth, $tnheight);
      imagecopyresized($shrunk, $sourceimg, 0, 0, 0, 0, $shrunkwidth, $tnheight, $width, $height);
      $targetimg = imagecreatetruecolor($tnwidth, $tnheight);
      imagecopy($targetimg, $shrunk, 0, 0, $snipsize, 0, $tnwidth, $tnheight);
    }
    imagejpeg($targetimg, $tnimgpath, $quality);
    return $tnimgpath;
  } else {
    // We really shouldn't ever get here but I like to be complete.
    return NULL;
  } 
}