";
//print "| \n";
include_once 'cache.php';
$cache = new Cache();
$RAND_THUMBS_KEY = "RANDOM_THUMBS_$mediaType";
$thumbArray = array();
if($validAfter != ''){
$dataString= $cache->fetchExpire($RAND_THUMBS_KEY, $validAfter);
if($dataString){
// If it exists, it will be a string and we need to turn it back into an array of arrays
$thumbArray = deserialize_nested($dataString);
}
}
if(count($thumbArray) == 0){
// since results are no longer guaranteed to be unique from one query to the next, stop looping if no progress was made on a query
// this is more of a heuristic than a function (it could cop out early given unlucky random values). If limiting can be done with where clauses w/o breaking it,
// that should be done instead (TODO:)
$lastNumDisplayed = -1;
while((count($alreadyDisplayed) < $numThumbs) && ($optionsExhausted === false) && ($lastNumDisplayed < count($alreadyDisplayed))){
$lastNumDisplayed = count($alreadyDisplayed);
if($result = mysql_query($queryString,$db)){
if(($numRows = mysql_num_rows($result)) && ($numRows > 0)){
for($cnt=0; ($cnt<$numRows) && (count($alreadyDisplayed)<$numThumbs); $cnt++){
if($mediaType == ""){
$randIndex = mt_rand(0, count($validTypes)-1);
$currType = $validTypes[$randIndex];
$id = mysql_result($result, $cnt, "$currType.id");
$thisEntry = array($currType, $id);
if(false === in_array($thisEntry, $alreadyDisplayed)){
$alreadyDisplayed[] = $thisEntry;
$thumbArray[] = array($currType, $id);
}
} else {
$id = mysql_result($result, $cnt, "id");
$thisEntry = array($mediaType, $id);
if(false === in_array($thisEntry, $alreadyDisplayed)){
$alreadyDisplayed[] = $thisEntry;
$thumbArray[] = array($mediaType, $id);
}
}
}
// TODO: Decide if this should be used, figure out why it was broken, and either fix or remove it.
/*// The where clauses limit the search to the point that no results are returned (not sure why).
if(count($alreadyDisplayed) < $numThumbs){
$queryString = $qStringBeg;
$queryString.= " WHERE ";
foreach($alreadyDisplayed as $entry){
print_r($entry);
$queryString .= $entry[0].".id!=".$entry[1]." AND ";
}
$queryString = substr($queryString, 0, strlen($queryString)-4); // chop off the extra 'AND '
$queryString.= " ORDER BY RAND() LIMIT $numThumbs";//.($numThumbs - count($alreadyDisplayed));
}*/
} else {
$optionsExhausted = true;
}
}
}
}
// Regardless of whether the data came from the cache or was queried, it should be an array of arrays right now, so display it.
foreach($thumbArray as $currThumb){
print " | ";
thumbById($currThumb[0], $currThumb[1]);
print " | ";
}
// This uses caching, so get the array and serialize it into a string.
if($validAfter != ''){
$dataString = serialize_nested($thumbArray);
$cache->cacheValue($RAND_THUMBS_KEY, $dataString);
}
print "
\n";
print "