/ck-gallery.php

<?php // CK-Gallery by Chris Kankiewicz <http://www.chriskankiewicz.com>

  // Customize your gallery by changing the following variables. If a variable 
  // is contained within quotes make sure you don't delete the quotes.

  $galleryDir  = "gallery";            // Original images directory (No trailing slash!)
  $thumbsDir   = "$galleryDir/thumbs"; // Thumbnails directory (No trailing slash!)
  $logFile     = "gallery-log.txt";    // Directory/Name of log file
  $thumbSize   = 100;                  // Thumbnail width/height in pixels
  $imgPerPage  = 0;                    // Images per page (0 disables pagination)
  $cacheExpire = 0;                    // Frequency (in minutes) of cache refresh
  $verCheck    = 0;                    // Set to 1 to enable update notifications


  // *** DO NOT EDIT ANYTHING BELOW HERE UNLESS YOU ARE A PHP NINJA ***

  $version = "1.2.0"; // File version

  isset($_GET['page']) ? $currentPage = $_GET['page'] : $currentPage = 1;
  
  
  // *** START PAGE CACHING ***
  
  // Create cache directory if it doesn't exist
  $cacheDir = "gallery-cache";
  if (!file_exists($cacheDir)) {
    mkdir($cacheDir);
  }
  $cacheFile = "$cacheDir/page$currentPage-cached.html";
  $cacheTime = $cacheExpire * 60;
  
  // Serve from the cache if it is younger than $cacheTime
  if (file_exists($cacheFile) && time() - $cacheTime < filemtime($cacheFile) && $cacheExpire >= 1) {
    include($cacheFile);
    echo "<!-- Cached page: created ".date('H:i:s', filemtime($cacheFile))." / expires ".date('H:i:s', (filemtime($cacheFile)) + $cacheTime)." -->\n";
  } else {
    ob_start();

    // Create log file if it does not exist, otherwise open log for writing
    if (!file_exists($logFile)) {
      $log = fopen($logFile, "a");
      fwrite($log,date("Y-m-d")." @ ".date("H:i:s")."  CREATED: $logFile\r\n\r\n");
    } else {
      $log = fopen($logFile, "a");
    }

    // Create image directory if it doesn't exist
    if (!file_exists($galleryDir)) {
      mkdir($galleryDir);
      fwrite($log,date("Y-m-d")." @ ".date("H:i:s")."  CREATED: $galleryDir\r\n");
    }

    // Create thumbnail directory if it doesn't exist
    if (!file_exists($thumbsDir)) {
      mkdir($thumbsDir);
      fwrite($log,date("Y-m-d")." @ ".date("H:i:s")."  CREATED: $thumbsDir\r\n");
    }

    // Clean up thumbnail directory
    if ($dirHandle = opendir($thumbsDir)) {
      while (($file = readdir($dirHandle)) !== false) {
        if (isImage("$thumbsDir/$file")) {
          $size = getimagesize("$thumbsDir/$file");
          if (!file_exists("$galleryDir/$file") || $size[0] !== $thumbSize) {
            unlink("$thumbsDir/$file");
            fwrite($log,date("Y-m-d")." @ ".date("H:i:s")."  REMOVED: $thumbsDir/$file\r\n");
          }
        }
      }
    closedir($dirHandle);
    }

    // Alcohol! The cause of, and solution to, all of life's problems!

    // Create array from gallery directory
    if ($dirHandle = opendir($galleryDir)) {
      while (($file = readdir($dirHandle)) !== false) {
        if (isImage("$galleryDir/$file")) {
          $images[] = $file;
        }
      }
    closedir($dirHandle);
    }

    // Page varriables
    $totalImages = count($images);
    if ($imgPerPage <= 0 || $imgPerPage >= $totalImages) {
      $imgStart = 0;
      $imgEnd = $totalImages;
    } elseif ($imgPerPage > 0 && $imgPerPage < $totalImages) {
      $totalPages = ceil($totalImages / $imgPerPage);
      if ($_GET['page'] < 1) {
        $currentPage = 1;
      } elseif ($_GET['page'] > $totalPages) {
        $currentPage = $totalPages;
      } else {
        $currentPage = $_GET['page'];
      }
      $imgStart = ($currentPage - 1) * $imgPerPage;
      $currentPage * $imgPerPage > $totalImages ? $imgEnd = $totalImages : $imgEnd = $currentPage * $imgPerPage;
    }

    // Opening markup
    echo("<!-- Start CK-Gallery v$version - Created by, Chris Kankiewicz <http://www.ChrisKankiewicz.com> -->\r\n");
    echo("<div id=\"gallery-wrapper\">\r\n  <div id=\"ck-gallery\">\r\n");

    for ($x = $imgStart; $x < $imgEnd; $x++) {
      $filePath = "$galleryDir/$images[$x]";

      // Convert file name and extension for processing
      if (ctype_upper(pathinfo($filePath,PATHINFO_EXTENSION))
      || strpos(basename($filePath),' ') !== false
      || strpos($filePath,'.jpeg') !== false) {

        $source = "$filePath";
        $fileParts = pathinfo($filePath); // Create array of file parts
        $ext = $fileParts['extension']; // Original extension
        $name = basename($filePath, ".$ext"); // Original file name without extension
        $dir = $fileParts['dirname']; // Directory path

        // Change extension to all lowercase
        if (ctype_upper($ext)) {
          $ext = strtolower($ext);
        }

        // Convert .jpeg to .jpg
        if ($ext == 'jpeg') {
          $ext = 'jpg';
        }

        // Replace spaces with underscores
        if (strpos($name,' ') !== false) {
          $extOld = $fileParts['extension'];
          $name = str_replace(' ','_',basename($filePath, ".$extOld"));
        }

        $destination = "$dir/$name.$ext";

        // Rename file and array element
        if (rename($source,"$dir/$name.tmp")) {
          if (rename("$dir/$name.tmp",$destination)) {
            $images[$x] = "$name.$ext";
            fwrite($log,date("Y-m-d")." @ ".date("H:i:s")."  RENAMED: $source to $destination\r\n");
          }
        }
      }

      $filePath = "$galleryDir/$images[$x]";
      $thumbPath = "$thumbsDir/$images[$x]";

      // Create thumbnail if it doesn't already exist
      if (!file_exists("$thumbPath")) {
        createThumb("$filePath","$thumbPath",$thumbSize);
        fwrite($log,date("Y-m-d")." @ ".date("H:i:s")."  CREATED: $thumbsDir/$images[$x]\r\n");
      }
      // Create XHTML compliant markup
      $noExt = substr($images[$x],0,strrpos($images[$x],'.'));
      $altText = str_replace("_"," ",$noExt);
      echo "    <a href=\"$filePath\" title=\"$altText\" class=\"thickbox\" rel=\"photo-gallery\"><img src=\"$thumbPath\" alt=\"$altText\"/></a>\r\n";
    }

    // Clear float, create horizontal rule
    echo("    <div class=\"clear\"></div><div class=\"hr\"><hr /></div>\r\n");

    // If pagination enabled, create page navigation
    if ($imgPerPage > 0 && $imgPerPage < $totalImages) {
      $pageName = basename($_SERVER["PHP_SELF"]); // Get current page file name
      echo("    <ul id=\"ck-pagination\" style=\"margin: 0 !important; padding: 0 !important;\">\r\n");

      // Previous arrow
      $previousPage = $currentPage - 1;
      echo("      <li".($currentPage > 1 ? "><a href=\"$pageName?page=$previousPage\" title=\"Previous Page\">&lt;</a>" : " class=\"inactive\">&lt;")."</li>\r\n");

      // Page links
      for ($x = 1; $x <= $totalPages; $x++) {
        echo("      <li".($x == $currentPage ? " class=\"current-page\">$x" : "><a href=\"$pageName?page=$x\" title=\"Page $x\">$x</a>")."</li>\r\n");
      }

      // Next arrow
      $nextPage = $currentPage + 1;
      echo("      <li".($currentPage < $totalPages ? "><a href=\"$pageName?page=$nextPage\" title=\"Next Page\">&gt;</a>" : " class=\"inactive\">&gt;")."</li>\r\n");

      echo("    </ul>\r\n");
    }

    // Closing markup
    echo("    <div id=\"credit\">Powered by <a href=\"http://code.web-geek.net/ck-gallery\" target=\"_blank\">CK-Gallery</a>");
    // Display Thickbox link if site is using Thickbox
    if(file_exists("thickbox.js") || file_exists("thickbox/thickbox.js")) {
      echo(" &amp; <a href=\"http://jquery.com/demo/thickbox\" target=\"_blank\">Thickbox</a></div>\r\n");
    } else {
      echo("</div>\r\n");
    }

    // Version check and notification
    if ($verCheck == "1") {
      $verInfo = @file("http://code.web-geek.net/ck-gallery/version-check.php?ver=$version");
      $verInfo = @implode($verInfo);
      if ($verInfo == "upgrade") {
        echo("    <div class=\"clear\"></div>\r\n");
        echo("    <div id=\"ck-notice\">A new version of CK-Gallery is availabe. <a href=\"http://code.web-geek.net/ck-gallery\" target=\"_blank\">Get the latest version here</a>.</div>");
      } elseif ($verInfo == "development") {
        echo("    <div class=\"clear\"></div>\r\n");
        echo("    <div id=\"ck-notice\">This is a development version of CK-Gallery.</div>\r\n");
      }
    }

    echo("    <div class=\"clear\"></div>\r\n  </div>\r\n</div>\r\n");
    echo("<!-- Page $currentPage of $totalPages -->\r\n");

    echo("<!-- End CK-Gallery - Licensed under the GNU Public License version 3.0 -->\r\n");

    fclose($log); // Close log

    // Cache the output to a file
    $fp = fopen($cacheFile, 'w');
    fwrite($fp, ob_get_contents());
    fclose($fp);
    ob_end_flush(); // Send the output to the browser
  }


  // *** START FUNCTIONS ***

  function createThumb($source,$dest,$thumb_size) {
  // Create thumbnail, modified from function found on http://www.findmotive.com/tag/php/
    $size = getimagesize($source);
    $width = $size[0];
    $height = $size[1];

    if ($width > $height) {
      $x = ceil(($width - $height) / 2 );
      $width = $height;
    } elseif($height > $width) {
      $y = ceil(($height - $width) / 2);
      $height = $width;
    }

    $new_im = ImageCreatetruecolor($thumb_size,$thumb_size);

    @$imgInfo = getimagesize($source);

    if ($imgInfo[2] == IMAGETYPE_JPEG) {
      $im = imagecreatefromjpeg($source);
      imagecopyresampled($new_im,$im,0,0,$x,$y,$thumb_size,$thumb_size,$width,$height);
      imagejpeg($new_im,$dest,75); // Thumbnail quality (Value from 1 to 100)
    } elseif ($imgInfo[2] == IMAGETYPE_GIF) {
      $im = imagecreatefromgif($source);
      imagecopyresampled($new_im,$im,0,0,$x,$y,$thumb_size,$thumb_size,$width,$height);
      imagegif($new_im,$dest);
    } elseif ($imgInfo[2] == IMAGETYPE_PNG) {
      $im = imagecreatefrompng($source);
      imagecopyresampled($new_im,$im,0,0,$x,$y,$thumb_size,$thumb_size,$width,$height);
      imagepng($new_im,$dest);
    }
  }

  function isImage($fileName) {
  // Verifies that a file is an image
    if ($fileName !== '.' && $fileName !== '..') {
      @$imgInfo = getimagesize($fileName);

      $imgType = array(
        IMAGETYPE_JPEG,
        IMAGETYPE_GIF,
        IMAGETYPE_PNG,
      );

      if (in_array($imgInfo[2],$imgType))
        return true;
      return false;
    }
  }

  // EOF

?>