Finding data in mongodb by column name without a known _id - php

Question

I want to select id and property_name just like i would on mysql
select property_name,_id from properties from properties
In mongodb that is
> db.properties.find({
...
... },{
... "property_name": 1
... }
... );
{ "_id" : ObjectId("6098e4743569ea6d9d6985b2"), "property_name" : "Aero Club" }
{ "_id" : ObjectId("6098f8e7a3397059ef264932"), "property_name" : "Radisson Blu Hotel" }
>
This is my php code
$client = new MongoDB\Client("mongodb://localhost:27017");
$collection = $client->hotel->properties;
//echo $collection->count();
echo "<pre>";
print_r($collection->find(array(), array("property_name" => 1))).iterator_to_array();
echo "</pre>";
I don't see the array of id and property_name returned anywhere so its hard fro me to loop through the returned object.
After returning the id and property, i wan't to translate this query into mongodb
select * from rooms where (has_sauna = 'yes' OR has_elevator = 'yes' or has_television = 'yes') and (price between "200" and "300" )
How can i fix the php query?.

Answer 1

Have you tried this one?
$collection->find(
{ $and: [
{ $or: [
{has_sauna : 'yes'},
{has_elevator : 'yes'},
{has_television : 'yes'}
]},
{ price: {$gt : 200, $lt : 300} }
]}
);

Answer 2

I can get the id and property name like this
$client = new MongoDB\Client("mongodb://localhost:27017");
$collection = $client->hotel->properties;
$cursor = $collection->find();
foreach ($cursor as $document) {
echo '"_id": '.$document["_id"]."<br />";
echo '"property name": '.$document["property_name"]."<br />";
}
While this works, i would like to know how to specify what columns/fields to find.