WordPress：发布文章后保存API JSON

Question

I need to grab all my blog posts and save then in a json file using the exactly structure provided by WordPress API Rest after a post is published. So I'm using this:

add_action('publish_post', function($ID, $post) {
    $url = 'http://website.local/wp-json/wp/v2/posts/';
    $response = wp_remote_get( $url );
    file_put_contents('data.json', $response);
}, 10, 2);

But it's returning an error:

Catchable fatal error: Object of class Requests_Utility_CaseInsensitiveDictionary could not be converted to string in /var/www/public/wp-content/themes/twentyseventeen/functions.php on line 578

Answer 1

Actually you need to use json encode function to convert the return to string:

$response = wp_remote_get( $url );
$responseData = json_encode($response);