aliyun-oss-wordpress/uninstall.php

<?php

//防止有人恶意访问此文件，所以在没有 WP_UNINSTALL_PLUGIN 常量的情况下结束程序
if (!defined('WP_UNINSTALL_PLUGIN')) {
    exit();
}

$obs_options = get_option('oss_options', true);
$upload_url_path = get_option('upload_url_path');
$oss_upload_url_path = esc_attr($obs_options['upload_url_path']);

//如果现在使用的是OSS的URL，则恢复原状
if ($upload_url_path == $oss_upload_url_path) {
    update_option('upload_url_path', '');
}

//移除配置
delete_option('oss_options');