JOIN not working in php mysql - php

Question

I am working on a project with PHP and MySQL. I am trying to run a SQL query where I need to fetch data from 5 tables. I'm getting an error on my query.
$value = json_decode(file_get_contents('php://input'));
$estId = $value->estId;
$sql = 'SELECT establishments.id, establishments.name,
establishments.stay_value, establishments.latitude,
establishments.longitude, establishments.description,
establishments.address,
facilities.id, facilities.name,
accomodations.id,accomodations.name
FROM establishments
INNER JOIN (establishments_facilities
INNER JOIN facilities
ON establishments_facilty.facility_id = facilities.id)
ON establishments.id = establishments_facility.id
INNER JOIN (establishments_accommodations
INNER JOIN accommodations
ON establishments_accommodations.accommodation_d = accomodations.id)
WHERE establishments.id ="'.$estId .'" ';
$result = $conn->query($sql);
if($result->num_rows>0){
while($row = $result->fetch_assoc()){
$json_obj = $row;
}
$json_obj['success'] = true;
echo json_encode($json_obj);
}
My 5 tables are:
establishments
1 id
2 user_id
3 name
4 logo
5 description
6 email
7 latitude
8 longitude
9 stay_value
accomodations
1 id
2 name
facilities
1 id
2 name
establishments_accommodations
1 id
2 establishment_id
3 accommodation_id
establishments_facilities
1 id
2 establishment_id
3 facility_id
Any help will be appreciated.

Answer 1

The query you wrote is hard to read and you should use alias for better readability and also join syntax does not look correct, here is the query with proper alias
SELECT
e.id,
e.name,
e.stay_value,
e.latitude,
e.longitude,
e.description,
e.address,
f.id,
f.name,
a.id,
a.name
FROM establishments e
INNER JOIN establishments_facilities ef on e.id = ef.id
INNER JOIN facilities f ON ef.facility_id = f.id
INNER JOIN establishments_accommodations ea on ea.establishment_id = ef.establishment_id
INNER JOIN accommodations a ON ea.accommodation_d = a.id
WHERE e.id ={some value}
Now in PHP you may have something as
$sql = "
SELECT
e.id,
e.name,
e.stay_value,
e.latitude,
e.longitude,
e.description,
e.address,
f.id,
f.name,
a.id,
a.name
FROM establishments e
INNER JOIN establishments_facilities ef on e.id = ef.id
INNER JOIN facilities f ON ef.facility_id = f.id
INNER JOIN establishments_accommodations ea on ea.establishment_id = ef.establishment_id
INNER JOIN accommodations a ON ea.accommodation_d = a.id
where e.id = '".$estId."'";
Note that where e.id = '".$estId."'" is vulnerable to sq-injection, so better to use prepared statement.