如何在 WP 页面顶部显示全屏 iframe?

How can I display a full-screen iframe on top of WP page?

当有人访问我的 WordPress 网站中的特定页面时,我想在该页面上显示另一个网站的全屏 iframe。它必须完全覆盖我的网页,所以看起来几乎就像用户现在在另一个网站上一样(url 仍然是我的)。

我该怎么做?可能有一个插件吗?

P. S. 我知道如何编码,但我从未在 WordPress 上开发过任何东西。请具体:)

编辑: 尝试将 iframe 放在 header.php:

<?php
/**
 * The header for our theme.
 *
 * This is the template that displays all of the <head> section and everything up until <div id="content">
 *
 * @link https://developer.wordpress.org/themes/basics/template-files/#template-partials
 *
 * @package staymore
 */

?><!DOCTYPE html>
<html <?php language_attributes(); ?>>
<head>
<meta charset="<?php bloginfo( 'charset' ); ?>">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="profile" href="http://gmpg.org/xfn/11">
<link rel="pingback" href="<?php bloginfo( 'pingback_url' ); ?>">

<?php wp_head(); ?>
</head>

<body <?php body_class(); ?>>
    <?php
    // When user visits http://my-website.com/privacy-policy
            if(is_page('privacy-policy'))
            {?>
            <iframe src="http://google.com" style="position:fixed; top:0px; left:0px; bottom:0px; right:0px; width:100%; height:100%; border:none; margin:0; padding:0; overflow:hidden; z-index:999999;">
            Your browser doesn't support iframes
        </iframe>
            <?}
    ?>
<div id="page" class="site">
    <a class="skip-link screen-reader-text" href="#content"><?php esc_html_e( 'Skip to content', 'staymore' ); ?></a>

    <header id="masthead" class="site-header" role="banner">
        <div class="wrap">
        <div class="site-branding">
                <h1 class="site-title"><a href="<?php echo esc_url( home_url( '/' ) ); ?>" rel="home"><?php bloginfo( 'name' ); ?></a></h1>
            <?php 

            $description = get_bloginfo( 'description', 'display' );
            if ( $description || is_customize_preview() ) : ?>
                <p class="site-description"><?php echo $description; /* WPCS: xss ok. */ ?></p>
            <?php
            endif; ?>
        </div><!-- .site-branding -->
        <button class="menu-toggle" aria-controls="primary-menu" aria-expanded="false"></button>
        <nav id="site-navigation" class="main-navigation" role="navigation">
            <?php wp_nav_menu( array( 'theme_location' => 'primary', 'menu_id' => 'primary-menu' ) ); ?>
        </nav><!-- #site-navigation -->

        </div>
    </header><!-- #masthead -->
    <div class="site-banner">
    <!-- #Header-image -->
        <?php if ( get_header_image() ) : ?>
    <a href="<?php echo esc_url( home_url( '/' ) ); ?>" rel="home">
        <img src="<?php header_image(); ?>" width="<?php echo esc_attr( get_custom_header()->width ); ?>" height="<?php echo esc_attr( get_custom_header()->height ); ?>" alt="">
    </a>
    <?php endif; // End header image check. ?>  
    </div>
    <div id="content" class="site-content">
        <div class="wrap">

这很容易,首先请通过在您的 header.php 文件中放置一个条件标记来检查页面:

    <?php
        // When Page 42 (ID) is being displayed.
        if (is_page( 42 ))
        { ?>
         <iframe src="https://www.w3schools.com/html/html_iframe.asp" frameborder="0" scrolling="yes" seamless="seamless" style="display:block; width:100%; height:100vh;"></iframe>
     <?php   }    ?>

您也可以在此条件标记中使用页面名称或 slug:

if (is_page('Contact')) {iframe code here}

if(is_page('about-us'))