media create fix

status.php

@@ -29,7 +29,7 @@ function status_create()
       && getimagesize($_FILES["media"]["tmp_name"]) !== false)
   {
     global $media_path;
-    $media = dechex(microtime());
+    $media = dechex(microtime(true)) . dechex(rand());
     move_uploaded_file($_FILES["media"]["tmp_name"], $media_path . $media);
   }
 
@@ -47,6 +47,7 @@ function status_create()
 
   $date = new DateTime($s["date"]);
 
+  global $media_url;
   echo json_encode(array("status" => $s["status"],
     "user_id" => intval($u["id"]),
     "creation_date" => $date->format(DateTime::ISO8601),