GeoJSON Object Array in PHP [duplicate]

I am having issues creating this "features object" in php/json here is an example of this code: https://doc.arcgis.com/en/arcgis-online/reference/geojson.htm

I am getting all of the information in the inside of the Features Object array and getting it formatted just fine but I can't seem to get the inital features object created.

 {
  "type": "FeatureCollection",
  **"features": [**
    {
      "type": "Feature",
      "geometry": {
        "type": "Point",
        "coordinates": [102.0, 0.5]
      },
      "properties": {
        "prop0": "value0"
      }
    }
  ]
}

my code is coming out like this though in json format:

{
  "type": "FeaturedCollection",
  "0": {
    **"features": {**
      "type": "Feature",
      "geometry": {
        "type": "Point",
        "coordinates": []
      }
    },
    "properties": {
      "id": 282
    }
  },
  "1": {
    "features": {
      "type": "Feature",
      "geometry": {
        "type": "Point",
        "coordinates": []
      }
    },
    "properties": {
      "id": 280
    }
  },

This is the code I am using to create the array:

foreach($posts as $post) {
        $data[] = array (
            'features' => array (
                'type' => 'Feature',
                'geometry' => array (
                    'type' => 'Point',
                    'coordinates' => array (
                        ),
                    ),
                ),
            
                'properties' => array(
                    'id' => $post->ID,
                
                ),
            );
    }

    return $data;

can someone point me in the right direction of how to create this Features Object? Again I am coding this in PHP and rendering it as JSON or GeoJson.

I found the answer: In case someone else is looking for the answer on how to structure geojson code in php this example works.

<?php

// Sample data (e.g., from a database)
$locations = array(
    array("name" => "Location A", "latitude" => 34.0522, "longitude" => -118.2437),
    array("name" => "Location B", "latitude" => 40.7128, "longitude" => -74.0060),
);

// Create the GeoJSON FeatureCollection structure
$geojson = array(
    'type' => 'FeatureCollection',
    'features' => array()
);

// Iterate through locations and create GeoJSON features
foreach ($locations as $location) {
    $feature = array(
        'type' => 'Feature',
        'geometry' => array(
            'type' => 'Point', // GeoJSON geometry type
            'coordinates' => array($location['longitude'], $location['latitude']) // GeoJSON coordinates format
        ),
        'properties' => array(
            'name' => $location['name'] // Add properties as needed
        )
    );
    // Add the feature to the FeatureCollection
    array_push($geojson['features'], $feature);
}

// Set the header to indicate JSON output
header('Content-type: application/json');

// Encode the PHP array as a JSON string and output it
echo json_encode($geojson, JSON_PRETTY_PRINT);

?>