Title: Adding 'add theme support' to functions.php
Last modified: August 20, 2016

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# Adding 'add theme support' to functions.php

 *  [john_harrison](https://wordpress.org/support/users/john_harrison/)
 * (@john_harrison)
 * [13 years, 7 months ago](https://wordpress.org/support/topic/adding-add-theme-support-to-functionsphp/)
 * Hi All.
 * My current functions.php file (for my own theme) looks like this:
 *     ```
       <?php //Adding the Open Graph in the Language Attributes
       function add_opengraph_doctype( $output ) {
       		return $output . ' xmlns:og="http://opengraphprotocol.org/schema/" xmlns:fb="http://www.facebook.com/2008/fbml"';
       	}
       add_filter('language_attributes', 'add_opengraph_doctype');
   
       //Lets add Open Graph Meta Info
   
       function insert_fb_in_head() {
       	global $post;
       	if ( !is_single()) //if it is not a post or a page
       		return;
               echo '<meta property="fb:admins" content="14412758189"/>';
               echo '<meta property="og:title" content="' . get_the_title() . '"/>';
               echo '<meta property="og:type" content="article"/>';
               echo '<meta property="og:url" content="' . get_permalink() . '"/>';
               echo '<meta property="og:description" content="' . strip_tags(get_the_excerpt()) . '"/>';
               echo '<meta property="og:site_name" content="' .  get_bloginfo('name') . '"/>';
       	if(!has_post_thumbnail( $post->ID )) { //the post does not have featured image, use a default image
       		$default_image="http://kylehallmusic.com/gha/wp-content/themes/gha/gha-band.jpg";
       		echo '<meta property="og:image" content="' . $default_image . '"/>';
       	}
       	else{
       		$thumbnail_src = wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), 'medium' );
       		echo '<meta property="og:image" content="' . esc_attr( $thumbnail_src[0] ) . '"/>';
       	}
       	echo "";
       }
       add_action( 'wp_head', 'insert_fb_in_head', 5 ); ?>
       ```
   
 * This is simply to get Facebook OG information.
 * I tried to add:
 * `<?php add_theme_support( 'post-thumbnails' ); ?>`
 * Underneath this to enable me to assign a default image when posting, which will
   put the image in the fb:image for the post.
 * However, this seems to break the site – when I click on the ‘like’ button, the
   page is blank.
 * Could anyone please help? Thanks…

The topic ‘Adding 'add theme support' to functions.php’ is closed to new replies.

## Tags

 * [add_theme_support](https://wordpress.org/support/topic-tag/add_theme_support/)
 * [functions](https://wordpress.org/support/topic-tag/functions/)

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 0 replies
 * 1 participant
 * Last reply from: [john_harrison](https://wordpress.org/support/users/john_harrison/)
 * Last activity: [13 years, 7 months ago](https://wordpress.org/support/topic/adding-add-theme-support-to-functionsphp/)
 * Status: not resolved

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