我发现函数是在中定义的wp-admin/includes/plugin.php 如本文所述https://wpseek.com/function/wp_add_privacy_policy_content/当我打开plugin.php 我发现一个干净的wordpress 4.9.8版本的文件中已经定义了wp\\u add\\u privacy\\u policy\\u content（）函数，而在我的wordpress 4.9.8版本中它丢失了，所以我又重新添加了它Kindly make sure the function is defined in plugin.php

/**
 * Helper function for adding content to the Privacy Policy Guide.
 *
 * Plugins and themes should suggest text for inclusion in the site\'s privacy policy.
 * The suggested text should contain information about any functionality that affects user privacy,
 * and will be shown on the Privacy Policy Guide screen.
 *
 * A plugin or theme can use this function multiple times as long as it will help to better present
 * the suggested policy content. For example modular plugins such as WooCommerse or Jetpack
 * can add or remove suggested content depending on the modules/extensions that are enabled.
 * For more information see the Plugin Handbook:
 * https://developer.wordpress.org/plugins/privacy/suggesting-text-for-the-site-privacy-policy/.
 *
 * Intended for use with the `\'admin_init\'` action.
 *
 * @since 4.9.6
 *
 * @param string $plugin_name The name of the plugin or theme that is suggesting content for the site\'s privacy policy.
 * @param string $policy_text The suggested content for inclusion in the policy.
 */
function wp_add_privacy_policy_content( $plugin_name, $policy_text ) {
    if ( ! is_admin() ) {
        _doing_it_wrong(
            __FUNCTION__,
            sprintf(
                /* translators: %s: admin_init */
                __( \'The suggested privacy policy content should be added only in wp-admin by using the %s (or later) action.\' ),
                \'<code>admin_init</code>\'
            ),
            \'4.9.7\'
        );
        return;
    } elseif ( ! doing_action( \'admin_init\' ) && ! did_action( \'admin_init\' ) ) {
        _doing_it_wrong(
            __FUNCTION__,
            sprintf(
                /* translators: %s: admin_init */
                __( \'The suggested privacy policy content should be added by using the %s (or later) action. Please see the inline documentation.\' ),
                \'<code>admin_init</code>\'
            ),
            \'4.9.7\'
        );
        return;
    }

    if ( ! class_exists( \'WP_Privacy_Policy_Content\' ) ) {
        require_once( ABSPATH . \'wp-admin/includes/misc.php\' );
    }

    WP_Privacy_Policy_Content::add( $plugin_name, $policy_text );
}