Cacher is the code snippet organizer for pro developers

<?php if(is_single()) { 
    echo '
        <meta property="og:title" content="' . get_the_title() . '">
        <meta property="og:type" content="article">
        <meta property="og:url" content="' . get_permalink() . '">
        <meta property="og:site_name" content="Sue Feng Design">
        <meta property="og:description" content="' . substr(preg_replace('/^s+|n|r|s+$/m', '', strip_tags($post->post_content)), 0, 400) . '">
      <meta property="og:updated_time" content="'. get_the_date('c') .'">
        ';
    if(get_post_custom_values('featured_image', get_the_ID())) {
        echo '
        <meta property="og:image" content="' . get_site_url() . get_post_custom_values('featured_image', get_the_ID())[0] . '">
        ';
    }
} ?>