Mongodb php compound query returns nothing - php

Question

I have the following array:
Array
(
[data.cars] => 44
[data.xp] => Array
(
[$gte] => 100
[$lte] => 500
)
[data.money] => Array
(
[$gte] => 200
[$lte] => 1000
)
)
When issuing this array to find it returns NULL.
Am I doing something wrong, I formated it according to this page, here:
http://us1.php.net/manual/en/mongo.sqltomongo.php
So basically, if I have
SELECT * FROM mytable WHERE data.cars = 44 AND data.xp >= 100 AND data.xp <= 500 AND data.money >= 200 AND data.money <= 1000
This query when run in the console gives exactly 4 results.
Here is the query:
{$and:[{"data.cars":44}, {"data.xp": {$gt:100, $lt:500}}, {"data.money": {$gt:200, $lt:1000}}]}
My array should work, but hey, it does not, please point me to what I'm doing wrong.
Thank you!

Answer 1

The query on MongoDB PHP should be formatted like this:
array(
'data.cars' => 44,
'data.xp' => array(
'$gt' => 100,
'$lt' => 500
),
'data.money' => array(
'$gt' => 200,
'$lt' => 1000
)
)

Answer 2

By doing json_encode() on two version of arrays, both at first sight seem identical, but as you will see, they are not, I discovered the "bug".
Both array's look like so:
array(
'data.cars' => 44,
'data.xp' => array(
'$gt' => 100,
'$lt' => 500
),
'data.money' => array(
'$gt' => 200,
'$lt' => 1000
)
);
One was hardcoded the other was dynamically built, but both json encoded were different, here they are:
{"data.cars":"44","data.xp":{"$gte":"100","$lte":"500"},"data.money":{"$gte":"200","$lte":"1000"}}
{"data.cars":44,"data.xp":{"$gte":100,"$lte":500},"data.money":{"$gte":200,"$lte":1000}}
The first array had the values as string, but couldn't see that on a regular print_r or a var_dump, so what I did was a force cast on the values and ... it WORKED :)
Thank you all guys for your effort and interest!

Answer 3

First of all it is really bad to use . or $ symbols in a keys name (and I actually thought that this is illegal ). This is because dot operator is used to access subdocuments.
So the first thing is to change that. The second thing is that you do not need $and there. So if you want to find the document, which has a = 1 and b = 2, then you do not need to do {$and : .... } all you need to do is {a : 1, b : 2}