combine array in php json encode - php

Question

I develop php code like this :
while($row = mysql_fetch_array ($result))
{
$catalogue = array(
'catalogue_id' => $row[0],
'catalogue_name' => $row[1],
'catalogue_cover' => $row[2],
'category' => array(
'id' => $row[3],
'name' => $row[4],
'cover' => $row[5],
'item' => array (
'id' => $row[6],
'name' => $row[7],
'cover' => $row[8],
'description' => $row[9],
'price' =>$row[10]
)
),
);
array_push($json, $catalogue);
}
$jsonresult = array2json($json);
echo $jsonresult;
The result json is :
[
{
"catalogue_id": "59",
"catalogue_name": "IT Catalog",
"catalogue_cover": "http://192.168.0.22:90/Ecatalogue/catalogue/covers/511b21f398969.jpeg",
"category": {
"id": "60",
"name": "Computer Accessory",
"cover": "http://192.168.0.22:90/Ecatalogue/category/covers/511b2e11e8b26.jpg",
"item": {
"id": "61",
"name": "CD",
"cover": "http://192.168.0.22:90/Ecatalogue/item/covers/511b2e1da3063.jpg",
"description": "",
"price": "0.00"
}
}
},
{
"catalogue_id": "59",
"catalogue_name": "IT Catalog",
"catalogue_cover": "http://192.168.0.22:90/Ecatalogue/catalogue/covers/511b21f398969.jpeg",
"category": {
"id": "61",
"name": "IT Category",
"cover": "http://192.168.0.22:90/Ecatalogue/category/covers/511caf7329f63.jpeg",
"item": {
"id": "63",
"name": "IT Item",
"cover": "http://192.168.0.22:90/Ecatalogue/item/covers/511cafa17cce5.jpeg",
"description": "",
"price": "0.00"
}
}
}
]
But I want to combine the same catalog like this :
[
{
"catalogue_id": "59",
"catalogue_name": "IT Catalog",
"catalogue_cover": "http://192.168.0.22:90/Ecatalogue/catalogue/covers/511b21f398969.jpeg",
"category": {
"id": "60",
"name": "Computer Accessory",
"cover": "http://192.168.0.22:90/Ecatalogue/category/covers/511b2e11e8b26.jpg",
"item": {
"id": "61",
"name": "CD",
"cover": "http://192.168.0.22:90/Ecatalogue/item/covers/511b2e1da3063.jpg",
"description": "",
"price": "0.00"
},
"category-2": {
"id": "61",
"name": "IT Category",
"cover": "http://192.168.0.22:90/Ecatalogue/category/covers/511caf7329f63.jpeg",
"item": {
"id": "63",
"name": "IT Item",
"cover": "http://192.168.0.22:90/Ecatalogue/item/covers/511cafa17cce5.jpeg",
"description": "",
"price": "0.00"
}
}
}
}
]
How can I do that ?

Answer 1

You can index the $catalogue by catalogue_id and append category as they come
while ($row = mysql_fetch_array($result)) {
$catalogue_id = $row[0];
if (!isset($json[$catalogue_id])) {
$json[$catalogue_id] = array(
'catalogue_id' => $catalogue_id,
'catalogue_name' => $row[1],
'catalogue_cover' => $row[2]
'categories' => array();
);
}
$json[$catalogue_id]['categories'][] = array(
'id' => $row[3],
'name' => $row[4],
'cover' => $row[5],
'item' => array (
'id' => $row[6],
'name' => $row[7],
'cover' => $row[8],
'description' => $row[9],
'price' =>$row[10]
);
}
$jsonresult = array2json(array_values($json));
echo $jsonresult;
Instead of array2json you could also use json_encode
echo json_encode(array_values($json));