How to store values in array then use it as json - php

Question

I'm trying to store values in an array structured like this:
{"parent":
{"class":"Green","user_name":"Nitish","user_loc":"Delhi","user_id":1,"user_blockclass":null,
"child":[
{"class":"Green","user_name":null,"user_loc":null,"user_id":1,"user_blockclass":"fst",
"child":[
{"class":"Green","user_name":"pandey","user_loc":"sdgfsjd","user_id":6,"user_blockclass":"fst"},
{"class":"Green","user_name":"chaku","user_loc":"sdgjs","user_id":7,"user_blockclass":"snd"},
{"class":"Green","user_name":"iks","user_loc":"sjkdfhkjs","user_id":8,"user_blockclass":"trd"},
{"class":"Green","user_name":"yash","user_loc":"hfksjdhfk","user_id":9,"user_blockclass":"frt"},
{"class":"Green","user_name":"joshi","user_loc":"dsfh","user_id":10,"user_blockclass":"fth"}
]},
{"class":"Green","user_name":null,"user_loc":null,"user_id":1,"user_blockclass":"snd",
"child":[
{"class":"Green","user_name":"pandey","user_loc":"sdgfsjd","user_id":6,"user_blockclass":"fst"},
{"class":"Green","user_name":"chaku","user_loc":"sdgjs","user_id":7,"user_blockclass":"snd"},
{"class":"Green","user_name":"iks","user_loc":"sjkdfhkjs","user_id":8,"user_blockclass":"trd"},
{"class":"Green","user_name":"yash","user_loc":"hfksjdhfk","user_id":9,"user_blockclass":"frt"},
{"class":"Green","user_name":"joshi","user_loc":"dsfh","user_id":10,"user_blockclass":"fth"}
]},
]
}
}
I'm trying to place this in two different array and the joining them, but it is not getting the approrpiate result, I've used a variable which iterates to store the different values, if I don't use iteration it overlaps the values and only shows the last stored values. Following is my code:
$blockclass = ['fst', 'snd', 'trd', 'frt', 'fth'];
$i = 0;
$children = $user->relations()->wherePlanId($selectplan)->get();
foreach($children as $ch)
{
$j = 0;
$subuserinfo = [];
$parent_id = $ch->pivot->child;
$subuser = User::find($ch->pivot->child);
$subuserinfo['class'] = "Green";
$subuserinfo['user_name'] = $ch->name;
$subuserinfo['user_loc'] = $ch->city;
$subuserinfo['user_id'] = $ch->id;
$subuserinfo['user_blockclass'] = $blockclass[$i];
if($subuser){
$subchildren = $subuser->relations()->wherePlanId($selectplan)->get();
foreach($subchildren as $subchild)
{
$subsubuser = User::find($subchild->pivot->child);
$subsubuserinfo['class'] = "Green";
$subsubuserinfo['user_name'] = $subsubuser->name;
$subsubuserinfo['user_loc'] = $subsubuser->city;
$subsubuserinfo['user_id'] = $subsubuser->id;
$subsubuserinfo['user_blockclass'] = $blockclass[$j];
$subuserinfo['child'][$i][$j++] = $subsubuserinfo;
}
}
else
{
$subuserinfo['child'][$i][$j++] = NULL;
}
$userinfo['child'][$i++] = $subuserinfo;
}
$tree = $userinfo;
dd($tree);
Currently the data structure which I'm getting is in following format:
array:6 [▼
"class" => "Green"
"user_name" => "Nitish"
"user_loc" => "Delhi"
"user_id" => 1
"user_blockclass" => null
"child" => array:4 [▼
0 => array:6 [▼
"class" => "Green"
"user_name" => null
"user_loc" => null
"user_id" => 1
"user_blockclass" => "fst"
"child" => array:1 [▼
0 => array:5 [▼
0 => array:5 [▼
"class" => "Green"
"user_name" => "pandey"
"user_loc" => "sdgfsjd"
"user_id" => 6
"user_blockclass" => "fst"
]
1 => array:5 [▼
"class" => "Green"
"user_name" => "chaku"
"user_loc" => "sdgjs"
"user_id" => 7
"user_blockclass" => "snd"
]
2 => array:5 [▼
"class" => "Green"
"user_name" => "iks"
"user_loc" => "sjkdfhkjs"
"user_id" => 8
"user_blockclass" => "trd"
]
]
]
]
1 => array:6 [▶]
2 => array:6 [▶]
3 => array:6 [▶]
I'm not able to fetch the data in this format, also after this I want to place the data to be used as json format. Help me out.

Answer 1

I thinkyou should replace all $subuserinfo['child'][$i][$j++] = $subsubuserinfo; with $subuserinfo['child'][$j++] = $subsubuserinfo;

Answer 2

I see you are using Laravel? If you use return response()->json($tree); it will print JSON.
If you also want the parent in front of the JSON you can use this:
return response()->json(['parent' => $tree]);