LoadVars doesn't work everytime

Question

On both my offline pc in using "test" withing Flash 8 and AS
2.0, and on my unix webhosting server,
I wrote a php script that saves name-value pairs from mysql
(Yeah ! Finally - if you read my other posts here!)
&keyword10=keyword1&keyword11=organelle&keyword12=photosynthesis&keyword13=digestion&keywo rd14=&keyword15=&keyword16=
However, both in the flash enviroment using "test" and in
executing the swf after uploading to my server
http://www.4themax.com/education/regents_quest/quiz.swf
sometimes the LoadVars loads and decodes the name-value
pairs, and other times doesn't.
Any insight? I haven't uncovered anything in searching this
forum nor in googling.
The LoadVars AS 2.0 is (which is in the main timeline):
traces were inserted for debugging during the AS development
process.
//sqlcache
var my_lv:LoadVars = new LoadVars();
my_lv.onLoad = function (success:Boolean):Void {
if (success) {
//Convert the variable string to properties
my_lv.decode(my_lv.toString());
//trace(my_lv.toString());
// Iterate over properties in my_lv
i=0;
for (var prop in my_lv) {
//trace(prop+" -> "+my_lv[prop]);
//trace(i+" prop : "+prop);
//trace("my_lv: "+my_lv[prop]);
i++;
t = i-2; // used to find total array elements because the
decode process populates the elements in reverse order
//trace(t);
} else {
trace("Unable to load external file.");
my_lv.load("sqlcache.txt");
//sqlcache.txt
//sqlcache repeat
var my_lv2:LoadVars = new LoadVars();
my_lv2.onLoad = function (success:Boolean):Void {
if (success) {
//Convert the variable string to properties
my_lv2.decode(my_lv2.toString());
//trace(my_lv.toString());
// Iterate over properties in my_lv
i=0;
for (var prop in my_lv2) {
//trace(prop+" -> "+my_lv[prop]);
j=t-i;
_global.keywords[j] = my_lv2[prop];
//trace(j+" "+_global.keywords[j]);
//trace(j+"my_lv: "+my_lv2[prop]);
i++;
} else {
trace("Unable to load external file.");
my_lv2.load("sqlcache.txt");
//sqlcache.txt repeat

Answer 1

Again, you're welcome.
Using LoadVars is only one way to do this. And you should
urlencode your values in your serverside script before returning
them. That way you can pass "?" or "=" in the values if you need
to, they will just be encoded to allow that to work properly (this
is important because there will be other values like "%" that will
be affected as well I believe).
Other ways to do it include: flash remoting,which lets you
pass complex objects as well as returning complex objects, xml
which lets you represent complex objects (in whatever way you
choose) more easily, and even json -javascript object notation-
which can also represent complex objects and is fast to encode on
the server (e.g. with php 5) but is a little slower to transfer and
to decode on the flash side compared with remoting/amfphp for
example (see json.org for actionscript classes - I use this on my
own website for pseudo-ajax style dynamic content loading).