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Auto adding rel nofollow to WordPress posts

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From an SEO perspective, there are multiple reasons that you want to use rel=nofollow on your links.

rel=nofollow basically tells Google not to pass ‘link juice’ to the target of the link.

Originally, you would want to do that to stop passing on your link juice, when you would want to keep it for your internal links. But now there is a more compelling reason, with so many blogs effectively selling links, if your blog posts have lots of outbound links to help the reader, then Google could inadvertently think you are actually a spammy blog.

As many of my blog posts reference third party sources, I didn’t want google to get the impression that the blog posts are there just to provide SEO to someone else and get caught up as a spammy blog.

Of course, you can manually add rel=nofollow to each link in a post, but I wanted a way of just setting all links in the content of a post to be rel=nofollow.

This simple bit of code added to functions.php does the trick for me

 

 

Setting up Varnish with Virtualmin – Centos in 5 steps

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I have just finished setting up Varnish on my test server that uses Webmin/Virtualmin, with Apache on Centos.

It has been a little bit of a voyage of discovery but I think I have cracked it. Much of what I have here is based on many other blogs and forums. In essence once you know how its easy, but there are a few pit holes to watch for in Virtualmin/Webmin, as editing the underlying httpd.conf file isn’t the way to go.

The main steps are

  1. Get Varnish
  2. Set up the Varnish control file
  3. Modify the Apache virtual hosts port number
  4. Restart the servers
  5. Tidy up Virtualmin server templates and make sure that Varnish runs on boot / restarted with Apache

and you are done.  My experience is on a Centos server, I’m sure that the process is the same on Ubuntu except the details of some of the linux level commands and file locations

[Read more…]

Adding Breadcrumbs to WordPress

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I came across a very useful bit of code for adding breadcrumbs to WordPress without a plugin at http://dimox.net/wordpress-breadcrumbs-without-a-plugin/

There was a small bug in the code where is search returnd anything but a standard post (e.g. a page or custom post type) the search breadcrumb didn’t work.  The code below is the modification to correct that issue.   For installation instructions (basically put it in your themes functions.php)  and any other issues with the code please refer back to the original blog  here http://dimox.net/wordpress-breadcrumbs-without-a-plugin/

[php]
/* breadcrumbs from http://dimox.net/wordpress-breadcrumbs-without-a-plugin/ */
/* is_search position modified */
function dimox_breadcrumbs() {

$showOnHome = 0; // 1 – show breadcrumbs on the homepage, 0 – don’t show
$delimiter = ‘»’; // delimiter between crumbs
$home = ‘Home’; // text for the ‘Home’ link
$showCurrent = 1; // 1 – show current post/page title in breadcrumbs, 0 – don’t show
$before = ‘<span class="current">’; // tag before the current crumb
$after = ‘</span>’; // tag after the current crumb

global $post;
$homeLink = get_bloginfo(‘url’);

if (is_home() || is_front_page()) {

if ($showOnHome == 1) echo ‘</pre>
<div id="crumbs"><a href="’ . $homeLink . ‘">’ . $home . ‘</a></div>
<pre>’;

} else {

echo ‘</pre>
<div id="crumbs"><a href="’ . $homeLink . ‘">’ . $home . ‘</a> ‘ . $delimiter . ‘ ‘;

if ( is_category() ) {
global $wp_query;
$cat_obj = $wp_query->get_queried_object();
$thisCat = $cat_obj->term_id;
$thisCat = get_category($thisCat);
$parentCat = get_category($thisCat->parent);
if ($thisCat->parent != 0) echo(get_category_parents($parentCat, TRUE, ‘ ‘ . $delimiter . ‘ ‘));
echo $before . ‘Archive by category "’ . single_cat_title(”, false) . ‘"’ . $after;

} elseif ( is_search() ) {
echo $before . ‘Search results for "’ . get_search_query() . ‘"’ . $after;

} elseif ( is_day() ) {
echo ‘<a href="’ . get_year_link(get_the_time(‘Y’)) . ‘">’ . get_the_time(‘Y’) . ‘</a> ‘ . $delimiter . ‘ ‘;
echo ‘<a href="’ . get_month_link(get_the_time(‘Y’),get_the_time(‘m’)) . ‘">’ . get_the_time(‘F’) . ‘</a> ‘ . $delimiter . ‘ ‘;
echo $before . get_the_time(‘d’) . $after;

} elseif ( is_month() ) {
echo ‘<a href="’ . get_year_link(get_the_time(‘Y’)) . ‘">’ . get_the_time(‘Y’) . ‘</a> ‘ . $delimiter . ‘ ‘;
echo $before . get_the_time(‘F’) . $after;

} elseif ( is_year() ) {
echo $before . get_the_time(‘Y’) . $after;

} elseif ( is_single() && !is_attachment() ) {
if ( get_post_type() != ‘post’ ) {
$post_type = get_post_type_object(get_post_type());
$slug = $post_type->rewrite;
echo ‘<a href="’ . $homeLink . ‘/’ . $slug[‘slug’] . ‘/">’ . $post_type->labels->singular_name . ‘</a> ‘ . $delimiter . ‘ ‘;
if ($showCurrent == 1) echo $before . get_the_title() . $after;
} else {
$cat = get_the_category(); $cat = $cat[0];
echo get_category_parents($cat, TRUE, ‘ ‘ . $delimiter . ‘ ‘);
if ($showCurrent == 1) echo $before . get_the_title() . $after;
}

} elseif ( !is_single() && !is_page() && get_post_type() != ‘post’ && !is_404() ) {
$post_type = get_post_type_object(get_post_type());
echo $before . $post_type->labels->singular_name . $after;

} elseif ( is_attachment() ) {
$parent = get_post($post->post_parent);
$cat = get_the_category($parent->ID); $cat = $cat[0];
echo get_category_parents($cat, TRUE, ‘ ‘ . $delimiter . ‘ ‘);
echo ‘<a href="’ . get_permalink($parent) . ‘">’ . $parent->post_title . ‘</a> ‘ . $delimiter . ‘ ‘;
if ($showCurrent == 1) echo $before . get_the_title() . $after;

} elseif ( is_page() && !$post->post_parent ) {
if ($showCurrent == 1) echo $before . get_the_title() . $after;

} elseif ( is_page() && $post->post_parent ) {
$parent_id = $post->post_parent;
$breadcrumbs = array();
while ($parent_id) {
$page = get_page($parent_id);
$breadcrumbs[] = ‘<a href="’ . get_permalink($page->ID) . ‘">’ . get_the_title($page->ID) . ‘</a>’;
$parent_id = $page->post_parent;
}
$breadcrumbs = array_reverse($breadcrumbs);
foreach ($breadcrumbs as $crumb) echo $crumb . ‘ ‘ . $delimiter . ‘ ‘;
if ($showCurrent == 1) echo $before . get_the_title() . $after;

} elseif ( is_tag() ) {
echo $before . ‘Posts tagged "’ . single_tag_title(”, false) . ‘"’ . $after;

} elseif ( is_author() ) {
global $author;
$userdata = get_userdata($author);
echo $before . ‘Articles posted by ‘ . $userdata->display_name . $after;

} elseif ( is_404() ) {
echo $before . ‘Error 404’ . $after;
}

if ( get_query_var(‘paged’) ) {
if ( is_category() || is_day() || is_month() || is_year() || is_search() || is_tag() || is_author() ) echo ‘ (‘;
echo __(‘Page’) . ‘ ‘ . get_query_var(‘paged’);
if ( is_category() || is_day() || is_month() || is_year() || is_search() || is_tag() || is_author() ) echo ‘)’;
}

echo ‘</div>
<pre>’;

}
} // end dimox_breadcrumbs()
[/php]