JSON encode in PHP and MySql [closed] - php

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I wanted this type of json using php and mysql. I tried a lot but the json which I get are duplicate data and very complex.
JSON I need:
{"data":[
{"Maharashtra":[
{"Mumbai":[
{"place_name":"Gateway of India"},
{"place_name":"Marine Lines"},
{"place_name":"Juhu"}
]},
{"Pune":[
{"place_name":"Singhad"},
]}
}],
{"Goa":[
{"Panji":[
{"place_name":"panji"}
]}
]}
}]}
PHP code:
<?php
require('database.php');
$counter=0;
$state = "SELECT distinct(s.state_name)
, ac.city_name
FROM all_state s, all_city ac
WHERE s.s_id = ac.state_id;";
$resultState = $conn->query($state);
$return_arr['data'] = array();
while($row = $resultState->fetch_assoc()){
$getStateName = $row['state_name'];
$getCityName = $row['city_name'];
$state_array[$getStateName] = array($getCityName);
array_push($return_arr['data'], $state_array);
}
echo json_encode($return_arr);

Answer 1

your query only returns states and cities so data like:
{"place_name":"Gateway of India"},
{"place_name":"Marine Lines"},
{"place_name":"Juhu"}
is not there: to push the data you are getting in to propper array use this:
while($row = $resultState->fetch_assoc()){
$stateArray[$row['state']][$row['city']] = array(); // the empty array is there to push your remaining data in to
}
$result = array('data' => $stateArray);
echo json_encode($result);
UPDATE TO ANSWER COMMENT:
You can add details to your array like this (or any other way, there are many, this is the most basic):
$stateArray[$stateYouWant][$cityYouWant]['place_names'] = array('Gateway of India', 'Marine Lines', 'Juhu');
This will give ytou something like:
{"Maharashtra":[
{"Mumbai":[
{"place_names":[
"Gateway of India",
"Marine Lines",
"Juhu"]}
]},
The variation you want:
{"Mumbai":[
{"place_name":"Gateway of India"},
{"place_name":"Marine Lines"},
{"place_name":"Juhu"}
]},
Is not possible because json is actually a string representation of associative array (or JS object) and that means you can not have same name keys on the same array level.