One of the Oldest and Most Distant Objects in the Universe Has Been Discovered

One of the Oldest and Most Distant Objects in the Universe Has Been Discovered

  1. One of the Oldest and Most Distant Objects in the Universe Has Been Discovered  Seeker
  2. Second-Oldest Galaxy In The Universe Spotted, Was Formed Almost A Billion Years After Big Bang  The Inquisitr
  3. Ancient Galaxy, Almost as Old the Big Bang, Spotted by Astronomers  The Weather Channel
  4. Second-Oldest, -Farthest Known Galaxy In The Universe Discovered Using Large Millimeter Telescope  International Business Times
  5. Full coverage

Detecting Adblock on your WordPress site

Detecting Adblock on your WordPress site

Detecting Adblock on your WordPress site

Loved by some, hated by others, Ad blockers have become an important factor to consider when owning or developing a website. In this article, I’m demonstrating a few techniques which can be used in order to detect Ad blockers on a website or most specifically, a WordPress blog.


Should you do something against people visiting your site with an ad blocker on? That’s the question many site owners are asking themselves since a few years.

Since the web exists, advertising has been a way for webmasters and site owners to make money. As ads brought lots of money, many people abused the model, displaying video ads, ads blocking contents, popups, etc. Even today, visiting a download site or just watching YouTube videos without an ad blocker is a complete pain. Approximately ten years ago, some people bothered by advertising abuse started to fight back. Ad blockers were born.

Some websites decide to do nothing against ad blockers. People who are using ad blockers aren’t likely to click on ads anyways, so it kinda makes sense. Other websites choose a diplomatic approach, asking their readers to whitelist their site, or make a small donation. And finally, some site owners choose to fight back against what they consider a threat to their revenue, by disabling features to readers who are using an ad blocker.

This article aims to demonstrate a few techniques which can be used to detect ad blockers or hide content from visitors with an ad blocker on. The way you use it on your website is up to you.

Basic JavaScript Adblock detection

The first thing to do is to create a file named adframe.js. This file is using the blacklisted name “adframe” so we’re gonna fool Adblock and make it block the file, mistaking it for a genuine ad. In the file, simply put the following line:

adblock = false;

Now, put the following withing the <head> and </head> tags of your HTML document.
On a WordPress Theme, the head section is displayed in header.php.

<script type="text/javascript">
    var adblock = true;
<script type="text/javascript" src="adframe.js"></script>
<script type="text/javascript">
    if(adblock) {
          //adblock is installed

Hiding content from users with ad blockers on

Hiding content from users with an adblocker is definitely easy. The only thing you have to do is to pick up one class blocked by Adblock, and add it to the container of your choice.

In the example below I’ve used the class .bsarocks which is added by BuySellAds around their ad banners:

<div class="bsarocks">This won't be seen by Adblock users.</div>

WordPress plugin

While the code snippets shown above can definitely be useful, if you’re using WordPress, I definitely recommend using a plugin if you’re looking to detect/block Adblock. The main reason for favoring a plugin over a code snippet is that a plugin can be updated by its author as soon as there’s a change in the way Adblock works.

There’s a few plugins out here that specialize in Adblock (and other ad blockers) detection. The most interesting in my opinion is Ad Blocking Detector. Check out the demo on the plugin website. It detects ad blockers pretty well.


Ad Blocking Detector gives you the availability to create shortcodes to display alternative content if an ad is blocked by an ad blocker. This is especially interesting if you want to encourage your readers to disable their adblocker on your website in order to support it.

The plugin should be installed through the basic plugin installation procedure, ie. “Plugins” → “Add New” in your WordPress dashboard.

Detecting visitors with JavaScript off

Some users also choose to disable JavaScript by default, to prevent many things such as popups being open, etc. Just in case you don’t know, there’s a HTML tag call noscript which allows you to display a message to users with JavaScript off:

 For full functionality of this site please enable JavaScript.

Which approach should you adopt?

Well, it’s up to you. I personally think that things aren’t all black or all white. Sure thing, ads are an important source of income for web publishers and many websites wouldn’t exist without them. On the other hand, some ads are so annoying that people who use an ad blocker can definitely be understood.

The only sure thing is that, as a website owner, you shouldn’t display “aggressive” ads to your visitors. Pop unders, video or flash ads, etc, in my opinion those should be totally banished from a serious and professional website. On the other hand, I have no problem with related banners ads, as such as the ones you can purchase on

Using SQL to manage WordPress: The definitive guide

Using SQL to manage WordPress: The definitive guide

Using SQL to manage WordPress: The definitive guide

WordPress stores a lot of things in the database. Using SQL queries, you can easily perform tasks that would take a lot of time and hassle otherwise. In this article, I have compiled a guide as well as 15+ ready to use SQL queries for managing comments and users, batch editing your posts, cleaning up your database, and many more.


Once you’ve entered PhpMyAdmin, you first have to select your blog database, then click on SQL tab to display the page which allows you to run any kind of queries.

Another option is to use a plugin named SQL Executioner. As the name says, the aim of this plugin is to allow you to run SQL queries on your WordPress database from within the Dashboard.

Important things to note:

  • Always have a fresh backup of your database when applying those SQL queries. You can do so manually or use a WordPress plugin such as WP-DBManager.
  • This article uses default table prefix wp_. Make sure you change the prefixes to match the ones used by your database.

Delete all comments with a specific url

Spam is definitely a problem ith WordPress blogs, happily SQL is here to help.

DELETE from wp_comments WHERE comment_author_url LIKE "%spamurl%" ;

Source: WPRecipes

Delete all trackbacks

Most people, including me, think that trackbacks are useless. Clean up your blog database with that nifty query.

DELETE FROM wp_comments WHERE comment_type="trackback";

Source: Forums

Close trackbacks on all posts at once

Even better than deleting them, you can close all trackbacks at once with this query.

UPDATE wp_posts SET ping_status = 'closed';

Source: Dig WP

Bulk delete all unapproved comments

Too lazy to check all of your unapproved comments? This is the super fast way to delete them all at once.

DELETE from wp_comments WHERE comment_approved = '0';

Source: Forums

Bulk delete all comments marked as spam

Got 5400 spam comments and don’t want to go through dozen of pages to delete them? This query is for you.

DELETE FROM wp_comments WHERE wp_comments.comment_approved = 'spam';

Source: Dig WP

Delete all post revisions and associated data

Make your database lighter by removing post revisions and all associated data. A query I run on my blogs every 3-6 months.

DELETE a,b,c FROM wp_posts a LEFT JOIN wp_term_relationships b ON (a.ID = b.object_id)
LEFT JOIN wp_postmeta c ON (a.ID = c.post_id) WHERE a.post_type = 'revision';

Source: Solidly Stated

Remove unused shortcodes in post content

Shortcodes are really cool, but at some point you need to be able to remove the unused ones. Rather than editing each of your posts, run this simple query! Replace [tweet] by the unused shortcode to remove.

UPDATE wp_post SET post_content = replace(post_content, '[tweet]', '' ) ;

Source: WPRecipes

Replace a word by another in post content

This can be very useful to update a link, for example.

UPDATE wp_post SET post_content = replace(post_content, 'old_word', 'new_word' ) ;

Add a custom field to all posts

If you’re always using a specific custom field, you better add it on all posts at once rather than editing X amount of your posts. Here you go!

INSERT INTO wp_postmeta (post_id, meta_key, meta_value)
SELECT ID AS post_id, 'MyCustomField'
AS meta_key 'myvalue AS meta_value
(SELECT post_id FROM wp_postmeta WHERE meta_key = 'MyCustomField')
`` AND post_type = 'post';

Source: The Customize Windows

Delete very old posts

Are all your posts very outdated? Here’s an easy way to remove them. For optimal results, you should definitely use 301 redirections to redirect deleted posts to your homepage or updated versions of those posts.

DELETE FROM wp_posts WHERE post_date < '2010-01-01 00:00:00' AND post_status = 'publish'


Get a list of all commentators’ emails

Not really that you should use email of your commentators for anything (except with their consent) but here’s the way to get a list of all emails stored in the wp_comments table. Note the use of DISTINCT to make sure the query won’t return any duplicates.

SELECT DISTINCT comment_author_email FROM wp_comments;

Source: Dig WP

Assign posts to a new author

If for some reason you want to transfer posts from an author to another, this query is yours. You need to update this query with both the old author and new author IDs before running it.

UPDATE wp_posts SET post_author = 'new-author-id' WHERE post_author = 'old-author-id';

Source: WPRecipes

Update user password

Quick way to update any password. Don’t forget to replace username by the user name of the user you’d like to update the password.

UPDATE wp_users SET user_pass = MD5( 'new_password' ) WHERE user_login = 'username';

Source: WordPress Support

Batch disable all plugins

In case something goes wrong with your blog, it can be a good idea to deactivate all your plugins, in case one of those was the source of the problem. Here’s how you can batch disable them using a SQL query.

UPDATE wp_options SET option_value = '' WHERE option_name = 'active_plugins';

Source: WPRecipes

Downsize your database by removing transients

Transients are a simple and standardized way of temporarily storing cached data in the database by giving it a custom name and a timeframe after which it will expire and be deleted. But sometimes, transients set by WP and countless plugins can take a lot of space in your database. Good news, transients can be safely removed with this simple query.

DELETE FROM `wp_options` WHERE `option_name` LIKE ('%\_transient\_%');

Source: Stack Overflow

Get rid of unused tags

As your database is probably filled with lots of tags you don’t use anymore, you should consider cleaning it with the following:

DELETE FROM wp_terms wt
INNER JOIN wp_term_taxonomy wtt ON wt.term_id = wtt.term_id WHERE wtt.taxonomy = 'post_tag' AND wtt.count = 0;

Source: WPMU Dev

Change all your urls/domain names

WordPress stores absolute urls within the database. Which means that if you change your blog domain name, you’ll have to update every absolute url. Using SQL, this is extremelly simple to do. Just edit the three queries below and update the old and new domain names, then run it. Done!

UPDATE wp_options SET option_value = replace(option_value, '', '') WHERE option_name = 'home' OR option_name = 'siteurl';
UPDATE wp_posts SET guid = replace(guid, '','');
UPDATE wp_posts SET post_content = replace(post_content, '', '');

Source: Smashing Magazine