Hi all,
I hacked up a copy of block-random for my own use on my digital picture frame, adding a few meta-tags for auto-refresh, etc. It's been working great for over a year now.
However, I'm trying to set up my brother's gallery server with the same block-random script (no changes) and when I try to access it, I don't get any errors, but all I get is the script printed on the screen AFTER the first section of code that uses "$gallery->". (The one in the DEFINE) The text that displays in the browser starts at:
app->albumDir . "/block-random.php .......
Both gallery servers are 1.3.3.
Here's my script: (Yeah, I know it's an old version, but it works!)
/*
* This block selects a random photo for display. It will only display photos
* from albums that are visible to the public. It will not display hidden
* photos.
*
* Once a day (or whatever you set CACHE_EXPIRED to) we scan all albums and
* create a cache file listing each public album and the number of photos it
* contains. For all subsequent attempts we use that cache file. This means
* that if you change your albums around it may take a day before this block
* starts (or stops) displaying them.
*/
// Hack prevention.
if (!empty($HTTP_GET_VARS["GALLERY_BASEDIR"]) ||
!empty($HTTP_POST_VARS["GALLERY_BASEDIR"]) ||
!empty($HTTP_COOKIE_VARS["GALLERY_BASEDIR"])) {
print "Security violation\n";
exit;
}
require($GALLERY_BASEDIR . "init.php");
if ($profile) {
$timer = time();
}
/* Initializing the seed */
srand ((double) microtime() * 1000000);
define(CACHE_FILE, $gallery->app->albumDir . "/block-random.cache");
define(CACHE_EXPIRED, 86400);
// Check the cache file to see if it's up to date
$rebuild = 1;
if (fs_file_exists(CACHE_FILE)) {
$stat = fs_stat(CACHE_FILE);
$mtime = $stat[9];
if (time() - $mtime < CACHE_EXPIRED) {
$rebuild = 0;
}
}
if ($rebuild) {
scanAlbums();
saveCache();
} else {
readCache();
}
$album = chooseAlbum();
if ($album) {
$index = choosePhoto($album);
}
if (isset($index)) {
$id = $album->getPhotoId($index);
echo "<meta http-equiv=refresh content=300>";
echo "<body bgcolor=#000000>";
echo ""
."<center><a href=" .makeAlbumUrl($album->fields["name"], $id) .">"
.$album->getPhotoTag($index,$full=0)
."</center></a>";
/*
$caption = $album->getCaption($index);
if ($caption) {
echo "<br><center>$caption</center>";
}
echo "<br><center>From: "
."<a href=" .makeAlbumUrl($album->fields["name"]) .">"
.$album->fields["title"]
."</a></center>";
*/
} else {
print "No photo chosen.";
}
if ($profile) {
$elapsed = time() - $timer;
print "<br>Elapsed: $elapsed secs";
}
/*
* --------------------------------------------------
* Support functions
* --------------------------------------------------
*/
function saveCache() {
global $cache;
if ($fd = fs_fopen(CACHE_FILE, "w")) {
foreach ($cache as $key => $val) {
fwrite($fd, "$key/$val\n");
}
fclose($fd);
}
}
function readCache() {
global $cache;
if ($fd = fs_fopen(CACHE_FILE, "r")) {
while ($line = fgets($fd, 4096)) {
list($key, $val) = explode("/", $line);
$cache[$key] = $val;
}
fclose($fd);
}
}
function choosePhoto($album) {
global $cache;
$count = $cache[$album->fields["name"]];
if ($count == 0) {
// Shouldn't happen
return null;
} else if ($count == 1) {
$choose = 1;
} else {
$choose = rand(1, $count);
$wrap = 0;
if ($album->isHidden($choose)) {
$choose++;
if ($choose > $album->numPhotos(1)) {
$choose = 1;
$wrap++;
if ($wrap = 2) {
return null;
}
}
}
}
return $choose;
}
function chooseAlbum() {
global $cache;
/*
* The odds that an album will be selected is proportional
* to the number of (visible) items in the album.
*/
$total = 0;
foreach ($cache as $name => $count) {
if (!$choose) {
$choose = $name;
}
$total += $count;
if ($total != 0 && ($total == 1 || rand(1, $total) <= $count)) {
$choose = $name;
}
}
if ($choose) {
$album = new Album();
$album->load($choose);
return $album;
} else {
return null;
}
}
function scanAlbums() {
global $cache;
global $gallery;
$cache = array();
$everybody = $gallery->userDB->getEverybody();
$albumDB = new AlbumDB();
foreach ($albumDB->albumList as $tmpAlbum) {
if ($everybody->canReadAlbum($tmpAlbum)) {
$seeHidden = $everybody->canWriteToAlbum($tmpAlbum);
$numPhotos = $tmpAlbum->numPhotos($seeHidden);
$name = $tmpAlbum->fields["name"];
if ($numPhotos > 0) {
$cache[$name] = $numPhotos;
}
}
}
}
?>