Data toevoegen aan JSON

Goedemorgen,

Ik probeer JSON index met meerdere niveau's te onleden in php om vervolgens in bv. niveau 4 data toe te voegen en dan weer terug te schrijven naar JSON.

ben al een stukie:

<?php
// orginele json data
$data = file_get_contents(plugin_dir_path( __FILE__ ) . 'data1.json');
$map_data = json_decode($data, true);

// extra data wat samengevoegd moet worden
$str = file_get_contents(plugin_dir_path( __FILE__ ) . 'data2.json');
$top_data = json_decode($str, true);

$outputs = array();
$output = array();;
$locations = array();
$persons = array();
$apparatuur = array();

$outputs['mapwidth']   = $map_data['mapwidth'];
$outputs['mapheight']  = $map_data['mapheight'];

// niveau 1
$niveau1 = array();
foreach ($map_data['levels'] as $level) {
	$output['id']  = $level['id'];

        // niveau 2
	$niveau2 = array();
	foreach ($level['categories'] as $categorie) {
		array_push($niveau2, $categorie);
	}
	$output['categories'] = $niveau2;
	
        // niveau 3
	$niveau3 = array();
	foreach ($level['locations'] as $location) {
		$locations ['id']  = $location['id'];
		
                // niveau 4.1
                $niveau4 = array();
		foreach ($location['persons'] as $person) {
			$persons ['naam']  = $person['title'];
			array_push($niveau4, $persons);
		}
		$locations['persons'] = $niveau4;
		
                // niveau 4.2
                $niveau5 = array();
		foreach ($top_data['apparaat'] as $apparaat) {
			if ($locations ['id'] == $apparaat['id']){
				$apparatuur ['naam']  = $apparaat['naam'];
				array_push($niveau5, $apparatuur);
			}
		}
                $locations['apparatuur'] = $niveau5; 
		array_push($niveau3, $locations);
	}
	$output['locations'] = $niveau3;
	array_push($niveau1, $output);
}
$outputs['levels'] = $niveau1;
$outputs['maxscale'] = $map_data['maxscale'];
print_r(json_encode($outputs));
?>

Data1.json:

{
	"mapwidth":"1000",
	"mapheight":"800",
	"levels":[{
		"id":"A.01",
		"categories":["1""2","3","4","5"],
		"locations":[{
			"id":"A.01.2",
			"persons":{
				"naam":"piet"
			}],
			"apparatuur":[]
		}]
	}],
	"maxscale":4
}

Data2.json:

{
"apparaat":[
        {
		"naam": "Koffiemachine",  
		"lokatie": "A.01.2", 
		"id": "KO00088"
	},
	{
		"naam": "Broodrooster",  
		"lokatie": "A.01.3", 
		"id": "BR00201"
	},
	{
		"naam": "Magnetron",  
		"lokatie": "A.02.1", 
		"id": "MA00901"
	}]
}

De output is:

{
	"mapwidth":"1000",
	"mapheight":"800",
	"levels":[{
		"id":"A.01",
		"categories":["1""2","3","4","5"],
		"locations":[{
			"id":"A.01.2",
			"persons":{
				"naam":"Piet"
			},
                        {
				"naam":"Henk"
			},
                        {
				"naam":"Sjaak"
			}],
			"apparatuur":[{
				"naam":"koffiemachine"
			}]
		}]
	}],
	"maxscale":4
}

Opzich prima alleen bij "persons" wordt maar 1 resultaat weergeven inplaats meerderen.. wordt er misschien wat overschreven?