/**
* Returns a randomly selected image from the album or its subalbums. (May be NULL if none exists)
*
* @param mixed $rootAlbum optional album object/folder from which to get the image.
* @param bool $daily set to true to change picture only once a day.
*
* @return object
*/
function getRandomImagesAlbum($rootAlbum = NULL, $daily = false)
{
global $_zp_current_album, $_zp_gallery, $_zp_current_search;
if (empty($rootAlbum)) {
$album = $_zp_current_album;
} else {
if (is_object($rootAlbum)) {
$album = $rootAlbum;
} else {
$album = newAlbum($rootAlbum);
}
}
if ($daily && ($potd = getOption('picture_of_the_day:' . $album->name))) {
$potd = getSerializedArray($potd);
if (date('Y-m-d', $potd['day']) == date('Y-m-d')) {
$rndalbum = newAlbum($potd['folder']);
$image = newImage($rndalbum, $potd['filename']);
if ($image->exists) {
return $image;
}
}
}
$image = NULL;
if ($album->isDynamic()) {
$images = $album->getImages(0);
shuffle($images);
while (count($images) > 0) {
$result = array_pop($images);
if (Gallery::validImage($result['filename'])) {
$image = newImage(newAlbum($result['folder']), $result['filename']);
}
}
} else {
$albumfolder = $album->getFileName();
if ($album->isMyItem(LIST_RIGHTS)) {
$imageWhere = '';
$albumInWhere = '';
} else {
$imageWhere = " AND " . prefix('images') . ".show=1";
$albumInWhere = prefix('albums') . ".show=1";
}
$query = "SELECT id FROM " . prefix('albums') . " WHERE ";
if ($albumInWhere) {
$query .= $albumInWhere . ' AND ';
}
$query .= "folder LIKE " . db_quote(db_LIKE_escape($albumfolder) . '%');
$result = query($query);
if ($result) {
$albumInWhere = prefix('albums') . ".id IN (";
while ($row = db_fetch_assoc($result)) {
$albumInWhere = $albumInWhere . $row['id'] . ", ";
}
db_free_result($result);
$albumInWhere = ' AND ' . substr($albumInWhere, 0, -2) . ')';
$sql = 'SELECT `folder`, `filename` ' . ' FROM ' . prefix('images') . ', ' . prefix('albums') . ' WHERE ' . prefix('albums') . '.folder!="" AND ' . prefix('images') . '.albumid = ' . prefix('albums') . '.id ' . $albumInWhere . $imageWhere . ' ORDER BY RAND()';
$result = query($sql);
$image = filterImageQuery($result, $album->name);
}
}
if ($image) {
if ($daily) {
$potd = array('day' => time(), 'folder' => $image->getAlbumName(), 'filename' => $image->getFileName());
setThemeOption('picture_of_the_day:' . $album->name, serialize($potd), NULL, $_zp_gallery->getCurrentTheme());
}
}
return $image;
}
/**
* Returns a randomly selected image from the gallery. (May be NULL if none exists)
* @param bool $daily set to true and the picture changes only once a day.
*
* @return object
*/
function getRandomImages($daily = false)
{
global $_zp_gallery;
if ($daily && ($potd = getOption('picture_of_the_day'))) {
$potd = getSerializedArray($potd);
if (date('Y-m-d', $potd['day']) == date('Y-m-d')) {
$album = newAlbum($potd['folder'], true, true);
if ($album->exists) {
$image = newImage($album, $potd['filename'], true);
if ($image->exists) {
return $image;
}
}
}
}
if (zp_loggedin()) {
$imageWhere = '';
} else {
$imageWhere = " AND " . prefix('images') . ".show=1";
}
$result = query('SELECT `folder`, `filename` ' . ' FROM ' . prefix('images') . ', ' . prefix('albums') . ' WHERE ' . prefix('albums') . '.folder!="" AND ' . prefix('images') . '.albumid = ' . prefix('albums') . '.id ' . $imageWhere . ' ORDER BY RAND()');
$image = filterImageQuery($result, NULL);
if ($image) {
if ($daily) {
$potd = array('day' => time(), 'folder' => $image->getAlbumName(), 'filename' => $image->getFileName());
setThemeOption('picture_of_the_day', serialize($potd), NULL, $_zp_gallery->getCurrentTheme());
}
return $image;
}
return NULL;
}