Installing Google Plus Button on WordPress

If you’ve been anywhere on the internet in the past few months, you’ve seen the +1 button from Google right next to Facebook, Twitter, StumbleUpon and other social media sharing buttons.  It’s pretty clear that Google intends the “plus one” to be THE most important form of approval on the ‘net, integrating all those “plusses” into search results as well as showing them within the Google+ Plus network.

Here’s how to integrate the Google Plus button on the WordPress Twenty Eleven theme.

Installing the Google Plus JavaScript code snippet

The first step to adding the Google Plus button to this theme is to add the JavaScript code snippet that “talks” to Google.  This code can be placed anywhere in the theme, but lets install it in our footer.php file, right before the the closing </body> tag:

<script type="text/javascript">
  (function() {
    var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true;
    po.src = '';
    var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s);


Adding Google Plus button on front page

To add the Google Plus button to each post displayed on the first page, we need to modify the content.php file.  Like all of the other modifications we’ve made to create a child theme like creating a custom header and custom footer, copy the content.php file into your child theme folder. To display the Google Plus button underneath the title, we need to place the following code, after the <div class="entry-content"> and before the <?php the_content> tag:

<div class="entry-content">
<!-- Place this tag where you want the +1 button to render -->
<g:plusone href="<?php the_permalink(); ?>"></g:plusone>
<?php the_content( __( 'Continue reading <span class="meta-nav">&rarr;</span>', 'twentyeleven' ) ); ?>

In the Google button code, the piece of code that references the_permalink is a WordPress function that passes the link of blog post to the Google Plus button.  Without this addition to the button, Google will use the URL of the page you are on…in my case, the 3 buttons on the front page would all reference, which means a visitor wouldn’t be able to recommend an individual post.

Adding a Google Plus button to an individual blog post

To add the Google Plus button on an individual article or blog post using the “Standard” format in Twenty Eleven, we can do the same basic process as above, except we’ll modify the content-single.php file (again, copy this file into your child theme folder!).  We’ll add the code after the <h1> tag and before the “If” statement that starts building the content:

<h1 class="entry-title"><?php the_title(); ?></h1>
<!-- Place this tag where you want the +1 button to render -->
<g:plusone href="<?php the_permalink(); ?>"></g:plusone>

<?php if ( 'post' == get_post_type() ) : ?>

Technically, you don’t need to specify the the_permalink reference, since there will only be a single button on an individual blog post, and the Google Plus button will use the URL of the page.  But, it doesn’t hurt, so for documentation sake I’ve left it in.

Once you’ve added the button code on the individual page, you’re done! Visitors to your blog can now recommend your content on Google search and on the Google+ network.

Optional steps

For this tutorial, I only provided the code for modifying the “Standard” page format for a single blog post.  If you are using multiple formats across your blog, you’ll need to modify each template you are using.  They all begin with content-<format>.php, and the button code goes after the <h1> tag and before any other code.

It’s also possible to modify how large the Google Plus button is and what is displayed.  I’m using the default bubble annotation, but if you’d like to have a larger or smaller button, or just different options, you can use the code builder from Google to see the button options.

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