This doesn’t help at all if you’re looking for something in particular – It’s a much better idea to show the post within the context of the search query, as real search engines do.

See it in practice here.

This is a fairly easy thing to actually get working in WordPress. It’ll take just a couple of minutes, and will make a big difference to blog visitors. Here’s how I did it.

Creating a search result page

If your theme doesn’t already have one, you’ll need to construct a template within your theme that WordPress will use for search results. By default, WordPress will use your index.php template, so that’s usually a good place to start with, for normal themes.

Duplicate index.php, and call it search.php.

If you already have a search.php, you’re all set.

A note about theme engines

A special case here is for theme engines like Thematic (which I use for this blog). For Thematic, it’s a matter of un-hooking the provided search ‘loop’ from within your child theme, and replacing it with your own.

In my case, with a Thematic child theme, this takes place within functions.php. First, one needs an ‘init’ action, to remove the existing hooks.

function mytheme_init() {
   remove_action('thematic_searchloop', 'thematic_search_loop');
}
...
add_action('init', 'mytheme_init', 10);

Then, it needs a replacement function to perform the search result loop:

function mytheme_search_loop() {
  while ( have_posts() ) : the_post(); ?>
 
    <div id="post-<?php the_ID() ?>" class="<?php thematic_post_class() ?>">
      <?php thematic_postheader(); ?>
      <div class="entry-content">
        <?php thematic_content(); /* We will replace this next */ ?>
 
      </div>
      <?php thematic_postfooter(); ?>
  </div><!-- .post -->
 
  <?php endwhile;
}
...
add_action('thematic_searchloop', 'mytheme_search_loop');

Some smarts to show context

What I did was replace the content of each post displayed with some code that constructs and displays some context around the search terms found in the post.

In your search.php (or your search loop function, if you’re using a theme engine), look for the line that inserts the post content. Chances are, it’ll look something like <?php the_content('Keep reading'); ?>. In the case of the Thematic child theme above, it’s <php thematic_content(); ?>.

Delete that line, and replace it with the following (here’s a plain-text version, if that’s easier):

<?php
// Configuration
$max_length = 400; // Max length in characters
$min_padding = 30; // Min length in characters of the context to place around found search terms
 
// Load content as plain text
global $wp_query, $post;
$content = (!post_password_required($post) ? strip_tags(preg_replace(array("/\r?\n/", '@<\s*(p|br\s*/?)\s*>@'), array(' ', "\n"), apply_filters('the_content', $post->post_content))) : '');
 
// Search content for terms
$terms = $wp_query->query_vars['search_terms'];
if ( preg_match_all('/'.str_replace('/', '\/', join('|', $terms)).'/i', $content, $matches, PREG_OFFSET_CAPTURE) ) {
    $padding = max($min_padding, $max_length / (2*count($matches[0])));
 
  // Construct extract containing context for each term
  $output = '';
  $last_offset = 0;
  foreach ( $matches[0] as $match ) {
    list($string, $offset) = $match;
    $start  = $offset-$padding;
    $end = $offset+strlen($string)+$padding;
    // Preserve whole words
    while ( $start > 1 && preg_match('/[A-Za-z0-9\'"-]/', $content{$start-1}) ) $start--;
    while ( $end < strlen($content)-1 && preg_match('/[A-Za-z0-9\'"-]/', $content{$end}) ) $end++;
    $start = max($start, $last_offset);
    $context = substr($content, $start, $end-$start);
    if ( $start > $last_offset ) $context = '...'.$context;
    $output .= $context;
    $last_offset = $end;
  }
 
  if ( $last_offset != strlen($content)-1 ) $output .= '...';
} else {
  $output = $content;
}
 
if ( strlen($output) > $max_length ) {
  $end = $max_length-3;
  while ( $end > 1 && preg_match('/[A-Za-z0-9\'"-]/', $output{$end-1}) ) $end--;
  $output = substr($output, 0, $end) . '...';
}
 
// Highlight matches
$context = nl2br(preg_replace('/'.str_replace('/', '\/', join('|', $terms)).'/i', '<strong>$0</strong>', $output));
?>
 
<p class="search_result_context">
  <?php echo $context ?>
</p>
<p>
  <a href="<?php the_permalink() ?>" rel="bookmark">Read this entry</a>
</p>

Save, and search for something on your blog — you should see contextual search results, now.

One final tweak: Results per page

WordPress has a setting for the number of posts to show per page. You may want to use a different number of search results per page, given that each result is now shorter than a full post.

To override this ‘posts per page’ setting, you’ll want to find the line just before the search loop. It’ll probably look like <?php if (have_posts()) : ?>, or, if your theme doesn’t bother with that part, <?php while ( have_posts() ) : the_post(); ?>.

Before that line, insert the following:

<?php global $wp_query; $v = $wp_query->query_vars; $v['posts_per_page'] = 10; query_posts($v); ?>

This will take the current query (including the search phrase, page number, etc.), add a ‘posts per page’ parameter, then pass it back to WordPress’s query engine.

Thinking it’s better to keep things in the family, and take better advantage of that traffic, I put together an image hosting setup of my own. Now viewers come to my own site, instead of someone else’s!

It looks like this

The setup consists of an Automator service, and some PHP smarts on the site.

Under Snow Leopard, I can right-click on an image in Finder, click ‘Send Image to Image Hosting’, type in a title, then paste the URL that’s automatically been put onto my clipboard into a tweet.

Here’s how it works – this assumes a moderate level of understanding of PHP and assorted web administration. Update: I couldn’t help myself; I made a WordPress plugin for this, with some extra nice features.

Presentation

First, we need to put together a script that will display the image. What’s more, it would be nice to give the image a title, and link it back to the Twitter account.

So, we’ll want a place to put images, and a way to store the corresponding title and account name.

I opted to store the latter in a file alongside the image called (imagename).meta. I store the title, then a newline, then the Twitter account name.

Lets create image.php — it should take an image name parameter, excluding the file extension, and display the corresponding image, with any corresponding meta data.

Here’s a sample:

<?php
$MEDIA_DIR = "twitter-images";
 
// Get the image name, but avoid any path shenanigans by just grabbing the 'basename' of the file
$image = basename($_REQUEST['name']);
 
// Make sure it exists, or report a 404 error
if ( !$image || !is_file("$MEDIA_DIR/$image.jpg") ) {
    include("404.php");
    return;
}
 
// Grab the meta data
if ( file_exists("$MEDIA_DIR/$image.meta") ) {
    list($title, $source) = file("$MEDIA_DIR/$image.meta");
}
 
// Set a default title if we don't have any meta data
if ( !$title ) {
    $title = ucwords(strtolower($image));
}
 
// Include the page header, if you like
include("header.inc.php");
?>
 
<div class="content">
 
    <img src="/<?php echo MEDIA_DIR ?>/<?php echo $image ?>.jpg" alt="<?php echo htmlspecialchars($title) ?>" class="image" />
 
    <h1><?php echo $title ?></h1>
 
    <?php if ( $source ) : ?>
        <p>
            From <a href="http://twitter.com/<?php echo $source ?>">
                <img src="/media/images/twitter.png" width="14" height="14" alt="Follow us on Twitter!">
                <?php echo $source ?>
            </a>
        </p>
    <?php endif; ?>
 
</div>
 
<?php include("footer.inc.php"); ?>

Make sure it works by making a sample image called, say, IMG.jpg, and an accompanying metadata file, called IMG.meta with a title on the first line and a twitter account name on the second, and opening up http://yoursite.com/image.php?name=IMG

Now, we want to keep URLs short, so they don’t take up too much valuable space in a tweet, so we need to use some tricks here.

We’ll set up a .htaccess file that uses mod_rewrite to keep the URL short.

Something like this should do the trick:

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteCond %{REQUEST_URI} ^/([^/]+)$
RewriteCond %{DOCUMENT_ROOT}/twitter-images/%1.jpg -f
RewriteRule (.*) /image.php?name=$1 [L]
</IfModule>

Note on the fifth line we are checking inside our Twitter images folder — make sure that matches your storage path.

This will take any requests that:

• Are located in the web-root (start with a slash, followed by anything but a slash until the end)
• Have a corresponding file within the directory we’ll store images in

Then, it’ll rewrite the request silently to use image.php.

Save the .htaccess file, and open http://yoursite.com/IMG. It should bring up the image, just as before.

Set up some CSS to make it look good, and you’re set. Here’s mine:

 
/* @group Twitter images */
 
.twitter-image .content {
	margin-top: 50px;
	margin-bottom: 50px;
}
 
.twitter-image .content img.image {
	-moz-border-radius: 20px;
	-webkit-border-radius: 20px;
	background: #f1f1f1;
	border: 1px solid #aaa;
	padding:  40px;
	margin-right: 60px;
	display: block;
	margin: 0 auto;
}
 
.twitter-image .content h1 {
	padding-top: 60px;
	text-align: center;
}
 
.twitter-image .content p {
	text-align: center;
}
 
.twitter-image .content a {
	text-decoration: none;
}
 
.twitter-image .content a img {
	vertical-align:text-bottom;
}
 
/* @end */

Automator

Now, with the web side set up, we need to set up an easy way to send content there.

I opted for an Automator service, which uses scp to upload the content. If your web host doesn’t provide for scp, you may want to use something else like ncftpput, or even an Applescript-able application. You’ll need to modify the Automator action’s shell script accordingly.

Here’s the Automator service I set up: Send Image to Image Hosting.zip.

For those interested, it contains the following shell script:

APPSUPPORT=~/"Library/Application Support/Image Hosting"
TMPDIR='/tmp/image-hosting.tmp'
DEST='me@mywebsite.com:www/mywebsite/twitter-images/'
URLPREFIX='http://mywebsite.com/'
UPLOADRETRIES=3
# GROWL="/usr/local/bin/growlnotify" # Uncomment this if you have Growl and growlnotify
 
[ ! -e "$APPSUPPORT" ] && mkdir "$APPSUPPORT"
 
for f in "$@"
do
  if [ ! -e "$f" ]; then
    osascript -e 'tell application "Finder"' -e 'activate' -e 'display dialog "Input file '"$f"' does not exist" with title "Image Hosting" buttons {"OK"} with icon Stop' -e 'end tell'
    exit
  fi
 
  # Generate random name
  while true; do
      name=`perl -e 'use MIME::Base64; $s=encode_base64(rand()); $s =~ s/=|\n//g; $s = substr($s, -5); print $s'`
      if ! grep "$name" "$APPSUPPORT/Taken Names" &>/dev/null; then break; fi;
  done;
 
  # Gather info
  default=`php -r '$s = basename("'"$f"'"); echo ucwords(strtolower(substr($s, 0, strpos($s, "."))));'`
  title=`osascript -e 'tell application "Finder"' -e 'activate' -e 'text returned of (display dialog "Enter image title" with title "Image Hosting" default answer "'"$default"'" buttons {"Cancel", "Continue"} default button 2)' -e 'end tell'`
  [ ! "$title" ] && exit
  defaulttwitter=`cat "$APPSUPPORT/Default Twitter Account" 2>/dev/null`
  twitter=`osascript -e 'tell application "Finder"' -e 'activate' -e 'text returned of (display dialog "Enter Twitter account" with title "Image Hosting" default answer "'"$defaulttwitter"'" buttons {"Cancel", "Continue"} default button 2)' -e 'end tell'`
  [ ! "$twitter" ] && exit
  echo $twitter > "$APPSUPPORT/Default Twitter Account"
 
  # Create temp files
  [ -e "$TMPDIR" ] && rm -rf "$TMPDIR"
  mkdir "$TMPDIR"
  cp "$f" "$TMPDIR/$name.jpg"
  echo "$title
$twitter" > "$TMPDIR/$name.meta"
 
  [ -f "$GROWL" ] && $GROWL -n 'Image Hosting' "Image Hosting: `basename "$f"`" -m "Image Hosting is uploading '$name'"
 
  # Upload
  retries=0
  while [ $retries -lt $UPLOADRETRIES ]; do
    result=`scp "$TMPDIR"/* "$DEST" 2>&1` && break;
    [ -f "$GROWL" ] && $GROWL -n "Image Hosting: `basename "$f"`" 'Image Hosting' -m 'Upload failed: Retrying'
    retries=$((retries+1))
  done
 
  if [ $retries -ge $UPLOADRETRIES ]; then
    osascript -e 'tell application "Finder"' -e 'activate' -e 'display dialog "Could not upload image.  Scp said: '"$result"'" with title "Image Hosting" with icon Stop' -e 'end tell'
    exit
  fi
 
  echo $name >> "$APPSUPPORT/Taken Names"
 
  osascript -e 'tell application "Finder" to set the clipboard to "'"$URLPREFIX$name"'"'
 
  [ -f "$GROWL" ] && $GROWL -n 'Image Hosting' "Image Hosting: `basename "$f"`" -m "Upload complete.  Available at $URLPREFIX/$name (copied to clipboard)"
done

To use it:

1. Unzip it,
2. Put it into Library/Services,
3. Double-click on it to open it in Automator,
4. Change the settings at the top of the ‘Shell Script’ segment —
   • Set DEST to the scp destination
   • Set up key-based SSH authentication, so you don’t have to enter the password to upload, or, if you’d prefer to use something other than scp to upload the file, you can change the upload command further down in the script, underneath the ‘Upload’ comment (look for scp)
   • Set URLPREFIX to http://yoursite.com
   • If you have Growl and growlnotify installed, then set GROWL to the location of growlnotify (highly recommended)
5. Save

Usage

If you’re using Leopard, you may need to log out, then log back in to see the service — I’m not entirely certain. If you’re on Snow Leopard, you should hopefully be set. Right-click on an image file in Finder, and click ‘Send Image to Image Hosting‘.

You should be asked for a title, then asked for a Twitter account name (this will be remembered for next time), then the upload will happen, and when it completes, the URL to the uploaded image will be put onto the clipboard so you can paste straight into Twitter.

Voila.

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Alternatively, in ‘inclusive’ mode specify a list of tags/categories to make public – all other tags/categories will remain hidden.

Download

Download the Private Tags plugin at the WordPress plugin page

If you like Private Tags, please consider buying one of my products.

Installation

1. Unzip the package, and upload private-tags to the /wp-content/plugins/ directory
2. Activate the plugin through the ‘Plugins’ menu in WordPress
3. Visit ‘Private Tags’ settings underneath WordPress settings to configure

Changes

0.1 – Initial release

For example:

This is a PHP framework that uses the common GD library to manipulate images.

It’s main interface is a content filter – give it HTML, containing images, and it will return the same HTML modified so that the images are now the converted versions, according to their ‘class’ attributes, with appropriate width/height attributes, etc. This makes it super easy to work with.

It stands alone, but it is also going to be a WordPress plugin (as you can see on this site, it’s already operational), a Joomla plugin, and I’m considering establishing a web service too, so those who don’t have adequate software on their server can still use it.

It has a plugin-based architecture so anyone can add new ‘themes’ (props to my partner Katherine for that beautiful wooden frame, by the way). I’m going to also implement a simple XML-based plugin schema, and possibly an interface to it, so that it’s easy to do so. I’m planning a ‘community’ style directory site to host contributed styles.

The base frame rendering code is such that it is trivially easy to add a new ‘theme’. It extracts segments from a single frame image, and handles seamless tiling to make the frame the right dimensions, so you don’t even have to worry about overlapping regions.

I will release it soon, after adding a little more content – keep your eyes peeled.

For now, check out the Michaelangelo showcase, which gives an idea of the different styles, and contains an interactive sampler to play with styles (IE users should stop being IE users to view this).

Doing my bit to beautify the web.

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This has typically been a bit of a messy workflow – I make changes, and then when happy, either open up a terminal and rsync the whole lot over, or open up Flow/Transmit and manually copy the changed files over. The whole thing makes me disinclined to make changes at all!

That is, until on a whim, I did a google search for a Textmate FTP bundle, and found Bernhard Fürst’s FTP/SSH Bundle for Textmate. This little gem lets you configure FTP settings for a project, then hit Option-S to save to the remote server, or Option-R to reload from the remote server. This way, when I’m happy with the changes, I just whack Option-S to send them to the server straight from Textmate.

That makes me happy.

One little caveat – the bundle does an odd thing with the project directory, opting to use the parent folder of the Textmate project file, something which won’t work for ad hoc projects, when one just drags a folder into Textmate (one of my favourite features). A quick fix:

1. Find Library/Application Support/TextMate/Bundles/FTP-SSH and open its contents
2. Open up Support/lib/helper_functions.php
3. Change the $PROJECT_DIR definition on line 15 to:

   $PROJECT_DIR = $_ENV['TM_PROJECT_DIRECTORY'];

Voila!

• Configurable sidebars! Choose from no sidebar, a sidebar on the right (the standard layout), or a double sidebar on the right!
• Support for WP 2.7 paginated and threaded comments
• Support for a custom header image – just enter a URL to an image, typically a transparent PNG, and it will appear in the header instead of the text (SEO friendly)
• Some bug, compatibility and i18n fixes

<

p>Note: If you have problems with this theme, please post your question at the WordPress forums. Please don’t contact me directly, as I don’t have the resources to help you.

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This can also manipulate content (through the preg_replace function, and configurable per-feed), such as removing names from Twitter entries. I’m using it on loopyapp.com to show all relevant items from both this blog and my Twitter feed automatically, as an alternative to creating a separate blog. I’m also using it on this blog, to incorporate blog entries and Twitter postings.

It uses the MagpieRSS RSS parser for PHP, which provides some nice functionality, including caching.

Here’s the code: aggregate.zip

To use it, unzip it to somewhere in your webroot, then edit aggregate.php and possibly rss.php to set your configuration. Make sure that either the aggregate directory is writable, or create a ‘cache’ directory within and make that writeable, to enable caching. Point your web browser to the rss.php file to immediately view an RSS feed aggregating your supplied feeds. To add a link to the RSS from a website, add it in the header:

<link rel="alternate" type="application/rss+xml" title="RSS Feed" href="http://mysite.com/aggregate/rss.php" />

To include content in a website, the provided render_aggregate_items function will do most of the work, or you can write your own rendering code. You just have to include the file, use the functions to obtain and draw the content, and then provide your own CSS styling. Example:

<div class="items">
<?php
include("aggregate.php");
render_aggregate_items(aggregate_items());
?>
</div>

A more comprehensive example is in sample.php.

The code is GPL, so use it however you want – keep the header comments there, though.

Custom Permalinks is a WordPress plugin that gives you ultimate control over your site structure.

Lay out your site the way you want it. Set the URL of any post, tag or category to anything you want. Old permalinks will redirect properly to the new address.

Download

Download Custom Permalinks for WordPress from the Custom Permalinks WordPress plugin page.

If you like Custom Permalinks, please consider buying one of my products.

Installation

1. Unzip the package, and upload ‘custom-permalinks’ to the ‘/wp-content/plugins/’ directory
2. Activate the plugin through the ‘Plugins’ menu in WordPress
3. Edit any post, tag or category to set a custom permalink.

Configuration

• Open or create a post, tag, or category.
• Under ‘Custom Permalink’, type in a URL, not including the http://domain part of the address.
  
• Save

Now, the post/tag/category will be accessible at the custom address.

Incoming visitors from old links will be redirected via a 301 redirect to the new address.

See Custom Permalinks in action right here! (See the address you’re currently at?)

Notes

Interacting with other plugins which modify the URL

If you notice that some plugins, such as Keyvan Minoukadeh’s Paged Comments plugin, are not operating correctly, then ensure that your custom permalinks have a trailing slash (or not, if your standard permalinks do not have trailing slashes).

The Paged Comments plugin, and possibly others, work by adding a path component to the URL to signify state (eg. /comment-page-1), then hiding that path component from WordPress.

If you have a custom permalink with a different trailing / configuration to your normal permalinks (i.e., your custom permalink has a trailing / when others don’t, or vice versa), you will notice that these plugins no longer work, because Custom Permalinks is correcting the URL, which overwrites the plugin’s changes.

If you notice this happening, make sure you have a trailing / on your permalink, or remove the trailing slash if your standard permalinks do not have a trailing /.

Hiding the custom_permalinks custom field

A user recently asked for this; I’m not going to include it in the plugin (some people, including me, want to see this field, because we set it manually sometimes), but I’m happy to make a plugin-let to make it happen.

Here it is: hide_custom_permalink_field.php.zip

Put it in your wp-content/plugins folder and turn it on in Plugins under WP admin.

FAQ

I just get a “404 error” message when I try to visit a custom permalink

Have you configured your default permalinks to be other than the default “?p=123″ style? If not, you probably haven’t got URL rewriting enabled. Either set your permalinks to one of the other options (or a custom layout), or add the following to your .htaccess file in your webroot, creating this file if necessary:

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

History

Version 0.6.1: Fix bug causing incorrect link from “View Post”/”View Page” button in post/page editor

Version 0.6: Fix infinite redirect for permalinks ending in a / (critical fix), and moved post/page permalinks settings to top of edit form, replacing prior permalink display

Version 0.5.3: Fix for invalid URL redirect (eg. http://domain.comfolder/file.html instead of http://domain.com/folder/file.html) when using permalinks without a trailing slash (like …/%postname%.html)

Version 0.5.2: Bugfix for matching posts when there are multiple posts that match parts of the query

Version 0.5.1: Compatibility fix for WP 2.7′s tag/category pages

Version 0.5: Support for installations in subdirectories (i.e. not located at the webroot). This should make Custom Permalinks start working for many people.

Version 0.4.1: WP 2.7 compatability fixes; fix for bug encountered when publishing a draft, or reverting to draft status, and fix for placeholder permalink value for pages

Version 0.4: Added support for pages, and fixed a bug concerning post drafts.

Version 0.3: Largely rewritten to provide more robust handling of trailing slashes, proper support for trailing URL components (eg. paging)

Version 0.2: Added management page to display all custom permalinks, with an option to revert selected items

Version 0.1.1: Fixed problem with categories

Version 0.1: Initial release

Google AdSense shortcode

This is the simplest plugin, which provides an ‘adsense’ shortcode to output a Google ad. To use it, use Google’s tools to create the ad, then paste it into the php file where indicated, then put {adsense} (replace the curly braces with square brackets) in posts/pages where you want the ad to appear (remove the spaces around the square brackets).

adsense.php.zip

And now for a demo + shameless attempt at monetization:

Media player

This one is useful if you occasionally post a video file on your blog, and host it locally. If you use video more frequently, there are plugins that probably are more suited, but I personally didn’t want the overhead, and I wanted to store videos in the standard upload locations, instead of having a separate repository, which seems to be what other plugins do.

This one uses the JW FLV player, provided in the plugin. Use something like:

{media source="http://my.site.com/path/to/video.flv" width="400" height="308" preview="http://my.site.com/path/to/preview.jpg"}

(replace the curly braces with square brackets)

mediaplayer.zip

I used this just the other day on a post demonstrating the output of the simulator I’ve written for my PhD.

Music player

This is the plugin that renders the content for my music page, as well as providing mini-players for other posts. Give it a path to a directory, and it will display all mp3 files in that directory with flash players based on the XSPF Web Music Player. Recently-added mp3 files will be marked as ‘New’. Use something like:

{musiclist path="path/to/my/music"}

(replace the curly braces with square brackets; add optional nolink=”true” parameter to avoid linking to the mp3 files from their titles)

For just one track, use:

{audio source="path/to/audio.mp3"}

musicplayer.zip