Masahiro NAKASHIMA

<p>The theme can be changed and displayed to only logged in users.</p>
<p>The visitors of the website see your old theme while you are testing the new one.</p>
<p>Only the administrator of the WordPress site sees the new theme that can now be tested safely.</p>
<p>You can also use this plugin instead of “Theme Test Drive” plugin.</p>


WP Theme Test

I have xdebug installed. There are two big Notices.

Threw two big PHP notices

The theme can be changed and displayed to only logged in users.

Nashwan D

<p>Conditional Themes is an API to switch the themes on certain conditions.</p>
<h4>Usage</h4>
<p>Write an another plugin file and use the Conditional Themes API as the example below:</p>
<pre><code>add_action('plugins_loaded', 'my_conditional_themes_setup', 100);

function my_conditional_themes_setup()
{
    // Switch to Twenty Eleven theme if the visitor use Internet Explorer.
    Conditional_Themes_Manager::register('twentyeleven', function() {
        global $is_IE;
        return (bool) $is_IE;
    });

    // Switch to Twenty Thirteen theme if the user has administrator role.
    Conditional_Themes_Manager::register('twentythirteen', function() {
        return current_user_can('administrator');
    });

    // Switch to a custom theme if the visitor use a mobile device.
    Conditional_Themes_Manager::register('mobile', 'wp_is_mobile');
}
</code></pre>
<p>Another example, With enabling persistent mode.</p>
<pre><code>add_action('plugins_loaded', 'my_conditional_themes_setup', 100);

function my_conditional_themes_setup()
{
    // Enable the switcher persistent mode.
    Conditional_Themes_Manager::set_option('persistent', true);

    // Switch to Twenty Sixteen theme when we being on 2016.
    Conditional_Themes_Manager::register('twentysixteen', function() {
        return (date('Y') == 2016);
    });

    // Switch to Twenty Fifteen theme when the site reaches 500 post.
    Conditional_Themes_Manager::register('twentyfifteen', function() {
        return ((int) wp_count_posts() > 500);
    });
}
</code></pre>
<p>Note: You can use <a href="https://wordpress.org/plugins/code-snippets" rel="ugc">Code Snippets</a> plugin to add the code snippets to your site.</p>
<h4>Contributing</h4>
<p>Developers can contribute to the source code on the <a href="https://github.com/nash-ye/WP-Conditional-Themes" rel="nofollow ugc">Github Repository</a>.</p>


Conditional Themes

Keep up the good work. Plugin exactly doing what it should do. Perfect :)

Awesome Plugin. Neat and Accurate

A simple API to switch the themes on certain conditions.

WP Theme Test vs Conditional Themes