lRange("tracking:ip:$link", 0, -1);
if(!in_array($_SERVER['REMOTE_ADDR'], $ipTrack)){ // Check to see if visiter hit this link before (This would make it a lot easier to skew statistics if anyone would register multiples times)
$redis->rPush("tracking:ip:$link", $_SERVER['REMOTE_ADDR']);
$trTtl = $redis->ttl("links:$link");
if($trTtl != -2){
$tracking = $redis->zIncrBy("tracking:clicks", 1, $link);
}else{
if($trTtl == -2){ // The link has been deleted, no need to track it anymore
$redis->zRem("tracking:clicks", $link);
break;
}
}
}
$short = $redis->get("links:$link");
if($short){
echo $short;
exit(5);
}
}
// exit codes:
/*
exit 0 - Good script
exit 5 - Link redirection
10x exit codes
exit 11 - Shortener Stats redirection
exit 12 - Shortener Resolver redirection
exit 13 - Shortener About redirection
*/
// This has been depreciated. Still here for backwards compatibility with existing links
if(!empty($_GET['l'])){
followLink($redis, $_GET['l']);
}
// New way to check for valid short links, two characters shorter than the if statement above
if(!empty($_GET)){
$key = key($_GET);
if($key == "stats"){ header("location:http://s.lob.li"); exit(11); }
if($key == "resolv"){ header("location:http://r.lob.li"); exit(12); }
if($key == "about"){ header("location:http://a.lob.li"); exit(13); }
followLink($redis, $key);
}
?>
lob.li - Objective Links