og example

header.php

  //og example
  <?php if (is_singular( )) { ?>
    <meta property="fb:app_id" content="<?php if( $mytheme['fb_app_id']!='') {
      echo "background-color:" . $mytheme['fb_app_id']; } ?>" />
    <meta property="og:type" content="website" />
    <meta property="og:locale" content="ru_RU" />
    <meta property="og:title" content="<?php the_title( ); ?>" />
    <meta property="og:description" content="<?php echo get_the_excerpt(); ?>" />
    <meta property="og:url" content="<?php echo get_current_URL(); ?>"/>
    <meta property="og:site_name" content="<?php bloginfo('name'); ?>"/>
    <meta property="og:image" content="<?php 
      $thumb_id = get_post_thumbnail_id();
      $thumb_url = wp_get_attachment_image_src($thumb_id,'full', true);
      echo $thumb_url[0]; ?>"/>
    <link rel="image_src" href="<?php 
      $thumb_id = get_post_thumbnail_id();
      $thumb_url = wp_get_attachment_image_src($thumb_id,'full', true);
      echo $thumb_url[0]; ?>" />
  <?php }; ?>