要激活插件，您必须在插件中编写几行代码。

WordPress安装从wp admin/install运行。php。我们希望在安装成功后触发某些操作，因此插入代码的好地方就在下面：

<h1><?php _e( \'Success!\' ); ?></h1>

我们看到一个以以下内容开头的代码块：

if ( $error === false ) {
$wpdb->show_errors();
$result = wp_install($weblog_title, $user_name, $admin_email, $public, \'\', $admin_password);
extract( $result, EXTR_SKIP );

我选择在最后一个摘录语句之后插入我们的操作。为了激活插件，我添加了：

require_once( dirname( dirname( __FILE__ ) ) . \'/wp-admin/includes/plugin.php\' );
activate_plugin( dirname( dirname( __FILE__ ) ) . \'/wp-content/plugins/plugin-dir-name/pluginfile.php\' );

对于从插件列表中隐藏插件：

/**
 * Filter the list of plugins according to user_login
 *
 * Usage: configure the variable $plugin_credentials, which holds a list of users and their plugins.
 * To give full access, put a simple string "ALL"
 * To grant only for some plugins, create an array with the Plugin Slug, 
 *    which is the file name without extension (akismet.php, hello.php)
 *
 * @return array List of plugins
 */
function wdm_plugin_permissions( $plugins )
{
    // Config
    $plugin_credentials = array(
        \'admin\' => "ALL",
        \'other-admin\' => array(
            \'akismet\',
        ),
        \'another-admin\' => array(
            \'akismet\',
            \'hello\',
        ),
    );

    // Current user
    global $current_user;
    $username = $current_user->user_login;

    // Super admin, return everything
    if ( "ALL" == $plugin_credentials[ $username ] )
        return $plugins;

    // Filter the plugins of the user
    foreach ( $plugins as $key => $value ) 
    { 
        // Get the file name minus extension
        $plugin_slug = basename( $key, \'.php\' );

        // If not in the list of allowed plugins, remove from array
        if( !in_array( $plugin_slug, $plugin_credentials[ $username ] ) )
            unset( $plugins[ $key ] );
    }

    return $plugins;
}
add_filter( \'all_plugins\', \'wdm_plugin_permissions\' );

您需要根据用户角色修改代码。

关于插件隐藏代码，您可以参考this