inser Instagram post as WordPress post

            /* FETCH */
            $content = file_get_contents("https://api.instagram.com/v1/users/self/media/recent/?access_token=$accesstoken&count=$count");
            $feed = json_decode($content,true);

            foreach($feed[data] as $image) {

                $id = $image[id];
                $thumb = $image[images][thumbnail][url];
                $fullImage = $image[images][standard_resolution][url];
                $link = $image[link];
                $tags = $image[tags];
                $caption = $image[caption][text];

                $postExists = get_posts(array(
                    "meta_key" => "instagram_id",
                    "meta_value" => $id,
                    "post_status" => true
                ));

                /* If no posts with this instagram_id exists (with any post status), add it: */
                if(empty($postExists)){

                    // new post arguments
                        $post = array(
                            "post_title" => "Instagram " . $id,
                            "post_category" => array(get_cat_ID($category)),
                            "post_content" => "<p>$caption</p>",
                            "post_status" => "publish",
                            "post_type" => "post"
                        );

                    // adding the new post
                    $post_id = wp_insert_post($post);
                    update_post_meta($post_id,'instagram_id',$id);
                    wp_set_post_terms($post_id, $tags);

                    // adding the image as attachment
                    require_once(ABSPATH . 'wp-admin/includes/file.php');
                    require_once(ABSPATH . 'wp-admin/includes/media.php');
                    require_once(ABSPATH . 'wp-admin/includes/image.php');
                    media_sideload_image($fullImage, $post_id, "Instagram");

                }
            }