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10 Very Useful WordPress Hacks

WordPress is a great platform but it’s not perfect, so that’s why many users want to optimize it a little. A friend of mine sent me a document with a bunch of wordpress scripts,  so I wanted to share some of them with you. Please note that I’m not the one who wrote them; these scripts are so popular that I couldn’t find the authors for them. So, let’s thanks the unknown coders who make our life easier with their work. :)

How to open links in new window by default

First, open quicktags.js in the wp-admin folder.

Find:

if (!edCheckOpenTags(i)) {
var URL = prompt('Enter the URL' ,defaultValue);
if (URL) {
edButtons[i].tagStart = '<a href="' + URL + '">';
edInsertTag(myField, i);
}
}

Replace with:

if (!edCheckOpenTags(i)) {
var URL = prompt('Enter the URL' ,defaultValue);
if (URL) {
edButtons[i].tagStart = '<a href="' + URL + '"';
if (URL!='http://')
{
var defaultTarget = prompt('Enter the Target' ,'_blank');
if (defaultTarget) edButtons[i].tagStart += ' target="' + defaultTarget + '"';
} edButtons[i].tagStart +='>';
edInsertTag(myField, i);
}
}

 

How to prevent search bots from indexing search results

Add this script in the <head> section of your header.php file.

<?php if(is_search()) { ?>
   <meta name="robots" content="noindex, nofollow" />
<?php }?>

 

 

How to add “edit this” button on posts

All you have to do is to put this script where the_content() is, pobably in the single.php or page.php file. This link will only be visible if the user is administrator of author.

<?php edit_post_link(__('Edit This')); ?>

 

How to add a control panel link visible only for the admins, and also and edit button
Put it inside the loop and your blog will have “Login” and “Edit” for Admins only

// Begin WordPress loop
<?php
get_header();
if (have_posts()) : while (have_posts()) : the_post();
?>
 
// Admin only code
<?php if (current_user_can("manage_options")) : ?>
<a href="<?php echo bloginfo("siteurl") ?>/wp-admin/">Admin</a>
<?php  edit_post_link(‘Edit’,,);  ?>
<?php endif; ?>
 
// code here, get contents
...
...
 
// End WordPress loop
<?php endwhile; else: ?>
Sorry, no pages matched your criteria.
<?php endif; get_footer(); ?>

 

Create a custom database error page

Create and add the script above in “db-error.php” directly inside your /wp-content/ folder and WordPress will automatically use that when there is a database connection problem.

<?php // custom WordPress database error page
 
  header('HTTP/1.1 503 Service Temporarily Unavailable');
  header('Status: 503 Service Temporarily Unavailable');
  header('Retry-After: 600'); // 1 hour = 3600 seconds
 
  // If you wish to email yourself upon an error
  // mail("your@email.com", "Database Error", "There is a problem with the database!", "From: Db Error Watching");
 
?>
 
<!DOCTYPE HTML>
<html>
<head>
<title>Database Error</title>
<style>
body { padding: 20px; background: red; color: white; font-size: 60px; }
</style>
</head>
<body>
  You got problems.
</body>
</html>

 

 How to embed a page inside another page

This script can be used in the regular page loop. All you have to do is to replace **ID** with the ID of the page that you want to embed.

<?php $recent = new WP_Query("page_id=**ID**"); while($recent->have_posts()) : $recent->the_post();?>
       <h3><?php the_title(); ?></h3>
       <?php the_content(); ?>
<?php endwhile; ?>

 

How to add the author bio at the end of the post

This script will display the user name and bio from User settings area in the Admin Panel.

<div class="author-box">
   <div class="author-pic"><?php echo get_avatar( get_the_author_email(), '80' ); ?></div>
   <div class="author-name"><?php the_author_meta( "display_name" ); ?></div>
   <div class="author-bio"><?php the_author_meta( "user_description" ); ?></div>
</div>

 

How to create a Facebook “Like” button

Add this script into single.php template underneath where it outputs the content of the post.

<iframe src="http://www.facebook.com/plugins/like.php?href=<?php echo rawurlencode(get_permalink()); ?>&amp;layout=standard&amp;show-faces=true&amp;width=450&amp;action=like&amp;font=arial&amp;colorscheme=light" scrolling="no" frameborder="0" allowTransparency="true" id="facebook-like"></iframe>

 

Move WordPress Admin Bar to the Bottom

Add this CSS to your CSS file, add all the code to your functions.php file in order to make it work.

function fb_move_admin_bar() {
    echo '
    <style type="text/css">
    body {
    margin-top: -28px;
    padding-bottom: 28px;
    }
    body.admin-bar #wphead {
       padding-top: 0;
    }
    body.admin-bar #footer {
       padding-bottom: 28px;
    }
    #wpadminbar {
        top: auto !important;
        bottom: 0;
    }
    #wpadminbar .quicklinks .menupop ul {
        bottom: 28px;
    }
    </style>';
}
// on backend area
add_action( 'admin_head', 'fb_move_admin_bar' );
// on frontend area
add_action( 'wp_head', 'fb_move_admin_bar' );

 

Reset Admin Password Through Database

You’ll need to be able to run SQL on that database, like for example, through phpMyAdmin.

UPDATE `wp_users` SET `user_pass` = MD5( 'new_password_here' ) WHERE `wp_users`.`user_login` = "admin_username";

 

Please not that you use these hack at your own risk.

Bogdan

Bogdan is the founder of Top Design Magazine. You can find him in Bucharest-Romania so next time you want to drink a beer there and talk about web and stuff, give him a message.

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