* Drastically reduce server load (and therefore throughput) for low z…

…oom,

  high data views.
  (This was done through proper direction of a for loop causing increased cache
   hits and also making it more likely that matches are found quickly.)
* While between 10 and 500 times faster (depending on amount of data) than
  before, it is still not instantaneous.

In the previous release the accuracy of positioning was increased drastically
on low zoom views.

get_local_ap.php

@@ -214,7 +214,7 @@ function add_blocks($top, $left, $bottom, $right)
            fclose($file);
        }
        else {
-           if($res >= 25000)
+           if($res >= 19500)
            {
                list ($lat, $long) = gs2latlon($value);
                $lat = doubleval($lat);
@@ -264,7 +264,7 @@ function add_blocks($top, $left, $bottom, $right)
                }
                else {
                    $broken = 0;
-                   for($i=0; $i<=$last_used; $i++)
+                   for($i=$last_used; $i>=0; $i--)
                    {
                        if(distance($good[$i]["lat"], $good[$i]["long"], $temp["lat"], $temp["long"]) < $res) { $broken = 1; break; }
                    }
@@ -302,7 +302,7 @@ function add_blocks($top, $left, $bottom, $right)
                        else if($lat >= $bottom && $lat <= $top && $long >= $left && $long <= $right)
                        {
                            $broken = 0;
-                           for($i=0; $i<=$last_used; $i++)
+                           for($i=$last_used; $i>=0; $i--)
                            {
                                if(distance($good[$i]["lat"], $good[$i]["long"], $lat, $long) < $res) { $broken = 1; break; }
                            }