PHP - fetch json data - php

Question

I have problem with this script...
My script has return this:
{
"categories": {
"cid": "1",
"name": "Pierwsza pomoc"
}
}{
"categories": {
"cid": "2",
"name": "Poradniki"
}
}{
"categories": {
"cid": "3",
"name": "Klany"
}
}{
"categories": {
"cid": "4",
"name": "Eventy, imprezy"
}
}{
"categories": {
"cid": "5",
"name": "Rozm\u00f3wki"
}
}{
"categories": {
"cid": "6",
"name": "Quest, solucje"
}
}{
"categories": {
"cid": "7",
"name": "Off topic"
}
}
But i want to this
[
'categories': {
'cid': 1,
'name': 'test',
'cid': 2,
'name': 'asdsad',
'cid': 3,
'name': 'asdasd'
}
]
Code used to create the data is
if($query->rowCount() > 0){
foreach($query as $row){
$Forum->writeJSON(array('categories' => array( 'cid' => $row['id'], 'name' => $row['name'] )));
}
}
class Forum {
public function writeJSON($array){
echo json_encode($array, JSON_PRETTY_PRINT);
}
}
$Forum = new Forum;

Answer 1

Well, this structure is not possible. You cannot store two or more elements with exactly same key in same object. However maybe you simply want this output:
[ 'categories' : { 1: {category_id:1, name:'test'}, 2: {category_id:2, name:'test'} } ]
It is simple, for example, you can use something like this to form that array:
<?php
//fetch data into categories variable
$output = array();
$output['categories'] = array();
foreach ($category as $category){
$output['categories'][] = array('category_id' => $category['id'], 'name' => $category['name']);
}
$output = json_encode($output);
?>
PS: Please use the correct variable names in your code, this is just an example using fictitious variable names

Answer 2

You need to change your foreach loop code
if($query->rowCount() > 0){
foreach($query as $row){
$cat_array[$row['id']] = array('cid'=>$row['id'],'name'=>$row['name']);
}
$json_array[] = array('categories'=>$cat_array);
$Forum->writeJSON($json_array);
}