Ben Huson

Michael Fields

Jamie McHale

<h4>Displaying Your Images in Your Theme</h4>
There are a few filters that you can use in your theme to display the image associations created by this plugin. Please read below for detailed information.
<h4>Display a single image representing the term archive</h4>
The following filter will display the image associated with the term asked for in the query string of the URL. This filter only works in views that naturally use templates like category.php, tag.php, taxonomy.php and all of their derivatives. Please read about <a href="https://codex.wordpress.org/Template_Hierarchy" rel="nofollow ugc">template hierarchy</a> for more information about these templates. The simplest use of this filter looks like:
<pre><code>print apply_filters( 'taxonomy-images-queried-term-image', '' );
</code></pre>
This code will generate and print an image tag. It’s output can be modifed by passing an optional third parameter to apply_filters(). This parameter is an array and the following keys may be set:
<ul>
<li>
after (string) – Text to append to the image’s HTML.
</li>
<li>
attr (array) – Key / value pairs representing the attributes of the <code>img</code> tag. Available options include: <code>alt</code>, <code>class</code>, <code>src</code> and <code>title</code>. This array will be passed as the fourth parameter to WordPress core function <code>wp_get_attachment_image()</code> without modification.
</li>
<li>
before (string) – Text to prepend to the image’s HTML.
</li>
<li>
image_size (string) – May be any image size registered with WordPress. If no image size is specified, ‘thumbnail’ will be used as a default value. In the event that an unregistered size is specified, this filter will return an empty string.
</li>
</ul>
Here’s an example of what a fully customized version of this filter might look like:
<pre><code>print apply_filters( 'taxonomy-images-queried-term-image', '', array(
 'attr' => array(
 'alt' => 'Custom alternative text',
 'class' => 'my-class-list bunnies turtles',
 'src' => 'this-is-where-the-image-lives.png',
 'title' => 'Custom Title',
 ),
 'before' => '<div id="my-custom-div">',
 'after' => '</div>',
 'image_size' => 'medium'
) );
</code></pre>
<h4>Similar functionality</h4>
If you just need to get the database ID for the image, you may want to use:
<pre><code>$image_id = apply_filters( 'taxonomy-images-queried-term-image-id', 0 );
</code></pre>
If you need to get the full object of the image, you may want to use:
<pre><code>$image = apply_filters( 'taxonomy-images-queried-term-image-object', '' );
</code></pre>
If you need to get the URL to the image, you may want to use the following:
<pre><code>$image_url = apply_filters( 'taxonomy-images-queried-term-image-url', '' );
</code></pre>
You can specify the size of the image in an option third parameter:
<pre><code>$image_url = apply_filters( 'taxonomy-images-queried-term-image-url', '', array(
 'image_size' => 'medium'
) );
</code></pre>
If you need data about the image, you may want to use:
<pre><code>$image_data = apply_filters( 'taxonomy-images-queried-term-image-data', '' );
</code></pre>
You can specify the size of the image in an option third parameter:
<pre><code>$image_data = apply_filters( 'taxonomy-images-queried-term-image-data', '', array(
 'image_size' => 'medium'
 ) );
</code></pre>
<h4>List term images associated with a post object</h4>
When a post is being displayed you may want to display the images associated with all of the terms associated with the post. The <code>taxonomy-images-list-the-terms</code> filter does this. Here’s what it looks like in its simplest form:
<pre><code>print apply_filters( 'taxonomy-images-list-the-terms', '' );
</code></pre>
This filter accepts an optional third parameter that you can use to customize its output. It is an array which recognizes the following keys:
<ul>
<li>
after (string) – Text to append to the output. Default value is a closing unordered list tag.
</li>
<li>
after_image (string) – Text to append to each image. Default value is a closing list-item tag.
</li>
<li>
before (string) – Text to prepend to the output. Default value is an open unordered list tag with an class attribute of “taxonomy-images-the-terms”.
</li>
<li>
before_image (string) – Text to prepend to each image. Default value is an open list-item tag.
</li>
<li>
image_size (string) – Any registered image size. Values will vary from installation to installation. Image sizes defined in core include: “thumbnail”, “medium” and “large”. “full” may also be used to get the unmodified image that was uploaded. Defaults to “thumbnail”.
</li>
<li>
post_id (int) – The post to retrieve terms from. Defaults to the ID property of the global <code>$post</code> object.
</li>
<li>
taxonomy (string) – Name of a registered taxonomy to return terms from. Defaults to <code>category</code>.
</li>
</ul>
Here’s an example of what a fully customized version of this filter might look like:
<pre><code>print apply_filters( 'taxonomy-images-list-the-terms', '', array(
 'before' => '<div class="my-custom-class-name">',
 'after' => '</div>',
 'before_image' => '',
 'after_image' => '',
 'image_size' => 'detail',
 'post_id' => 1234,
 'taxonomy' => 'post_tag',
) );
</code></pre>
<h4>Working with all terms of a given taxonomy</h4>
You will want to use the <code>taxonomy-images-get-terms</code> filter. This filter is basically a wrapper for WordPress core function <a href="https://codex.wordpress.org/Function_Reference/get_terms" rel="nofollow ugc">get_terms()</a>. It will return an array of enhanced term objects: each term object will have a custom property named <code>image_id</code> which is an integer representing the database ID of the image associated with the term. This filter can be used to create custom lists of terms. Here’s what it’s default useage looks like:
<pre><code>$terms = apply_filters( 'taxonomy-images-get-terms', '' );
</code></pre>
Here is what php’s <code>print_r()</code> function may return:
<pre><code>Array
(
 [0] => stdClass Object
 (
 [term_id] => 8
 [name] => Pirate
 [slug] => pirate
 [term_group] => 0
 [term_taxonomy_id] => 8
 [taxonomy] => category
 [description] => Pirates live in the ocean and ride around on boats.
 [parent] => 0
 [count] => 1
 [image_id] => 44
 )
)
</code></pre>
As you can see, all of the goodness of <code>get_terms()</code> is there with an added bonus: the <code>image_id</code> parameter!
This filter recognizes an optional third parameter which is an array of arguments that can be used to modify its output:
<ul>
<li>
cache_images (bool) If this value is <code>true</code> all associated images will be queried and cached for later use in various template tags. If it is set to <code>false</code>, this query will be suppressed. Do not set this value to false unless you have a really good reason for doing so 🙂 Default value is <code>true</code>.
</li>
<li>
having_images (bool) If this value is <code>true</code> then only terms that have associated images will be returned. Setting it to <code>false</code> will return all terms. Default value is <code>true</code>.
</li>
<li>
taxonomy (string) Name of a registered taxonomy to return terms from. Multiple taxonomies may be specified by separating each name by a comma. Defaults to <code>category</code>.
</li>
<li>
term_args (array) Arguments to pass to <a href="https://codex.wordpress.org/Function_Reference/get_terms" rel="nofollow ugc"><code>get_terms()</code></a> as the second parameter. Default value is an empty array.
</li>
</ul>
Here’s an example of a simple custom loop that you can use to display all term images:
<pre><code>$terms = apply_filters( 'taxonomy-images-get-terms', '' );
if ( ! empty( $terms ) ) {
 print '<ul>';
 foreach ( (array) $terms as $term ) {
 print '<li><a href="' . esc_url( get_term_link( $term, $term->taxonomy ) ) . '">' . wp_get_attachment_image( $term->image_id, 'detail' ) . '</a></li>';
 }
 print '</ul>';
}
</code></pre>
<h4>Support</h4>
If you have questions about integrating this plugin into your site, please <a href="https://wordpress.org/tags/taxonomy-images?forum_id=10#postform" rel="ugc">add a new thread to the WordPress Support Forum</a>. I try to answer these, but I may not always be able to. In the event that I cannot there may be someone else who can help.
<h4>Bugs, Suggestions</h4>
Development of this plugin is hosted in a public repository on <a href="https://github.com/benhuson/Taxonomy-Images" rel="nofollow ugc">Github</a>. If you find a bug in this plugin or have a suggestion to make it better, please <a href="https://github.com/benhuson/Taxonomy-Images/issues/new" rel="nofollow ugc">create a new issue</a>
<h4>Hook it up yo!</h4>
If you have fallen in love with this plugin and would not be able to sleep without helping out in some way, please see the following list of ways that you can hook it up!:
<ul>
<li>
Rate it! – Use the star tool on the right-hand sidebar of the <a href="https://wordpress.org/plugins/taxonomy-images/" rel="ugc">plugin homepage</a>.
</li>
<li>
Let me know if it works – Use the Compatibility widget on the <a href="https://wordpress.org/plugins/taxonomy-images/" rel="ugc">plugin homepage</a> to let everyone know that the current version works with your version of WordPress.
</li>
<li>
Do you Twitter? Help promote by using this shortlink: <a href="http://bit.ly/taxonomy-images" rel="nofollow ugc">http://bit.ly/taxonomy-images</a>
</li>
<li>
Are you a writer? Help promote by writing an article on your website about this plugin.
</li>
</ul>
<h4>Need More Taxonomy Plugins?</h4>
The original author of this plugin, Michael Fields, released a handful of plugins dealing with taxonomies. Please see his <a href="https://profiles.wordpress.org/mfields/" rel="nofollow ugc">WordPress.org profile</a> for more information.

Taxonomy Images

Associate images from your media library to categories, tags and custom taxonomies.

Rolf Allard van Hagen

Highlights search terms within WordPress generated search results, both on the search results page and on each linked post page itself.
This plugin is light weight and has no options. It started as very simple fusion between <a href="http://weblogtoolscollection.com/archives/2009/04/10/how-to-highlight-search-terms-with-jquery/" rel="nofollow ugc">How to Highlight Search Terms with jQuery – theme hack by Thaya Kareeson</a> and <a href="https://wordpress.org/extend/plugins/google-highlight/" rel="ugc">Search Hilite by Ryan Boren</a>.
It has since evolved with many optimizations, HTML5 and other plugin compatibility. Since version 1.6 it no longer depends on the jQuery library.
Features
<ul>
<li>Click through highlights: Highlights not only on WP search results page but also one click deeper inside a post page</li>
<li>Character and case insensitive (lenient) highlighting</li>
<li>Caching (WP Super Cache) compatibility</li>
<li>Search terms wrapped in double quotes now considered as single term</li>
</ul>
Compatible with:
<ul>
<li>Woocommerce</li>
<li>Search Filter Pro</li>
<li>BuddyPress</li>
<li>bbPress</li>
</ul>
<h4>What does it do?</h4>
This low impact plugin finds all search terms on a search results page inside each post and highlights them with a <code> ... </code> tag. 
Note that N is a number starting with 0 for the first term used in the search phrase increasing 1 for each additional term used. Any part of a search phrase wrapped in quotes is considered as a single term.
<h4>What does it NOT do?</h4>
There are no CSS style rules set for highlighting. You are free to use any styling you wish but to make the highlights visible in browsers that do not support HTML5 like Internet Explorer 8 or older you absolutely need to define at least one rule. 
Modern HTML5 browsers will use their own highlighting style by default, which usually is a yellow marker style background.
<h4>So what do I need to do?</h4>
In most cases, it should just work. But you can do two things to ensure backward browser and theme compatibility:
<ol>
<li>
Define CSS rules: There are no configuration options and there is no predefined highlight styling. You are completely free to define any CSS styling rules in your themes main stylesheet (style.css) or the Custom CSS tab if the WordPress theme customizer. 
You can find basic instructions and CSS examples in the <a href="https://wordpress.org/plugins/highlight-search-terms/#faq" rel="ugc">FAQ’s</a>.
</li>
<li>
Check your theme: In most up to date themes (including WP’s own default theme) post and page content is shown inside a div with class <code>hentry</code>. This means search terms found in post and page content will be highlighted but not similar terms that accidentally show in the page header, sidebar or footer. 
If your current theme does not use the <code>hentry</code> class (yet), this plugin will look for IDs <code>content</code>, <code>main</code> and finally <code>wrapper</code> but if none of those are found, it will not work for you out of the box. See the last of the <a href="https://wordpress.org/plugins/highlight-search-terms/#faq" rel="ugc">FAQ’s</a> for ways to make it work.
</li>
</ol>
<h4>Available hooks and filters</h4>
<ol>
<li>
<code>hlst_query_vars</code> – The array of WordPress query variables that the plugin will identify as a search query. Must return an array. Default: <code>['search_terms','bbp_search']</code> (WordPress abd bbPress search)
</li>
<li>
<code>hlst_input_get_args</code> – An array of GET variables that the plugin will identify as a search query. Must return an array. Default: <code>['hilite']</code> (for click-through highlighting)
</li>
<li>
<code>hlst_selectors</code> – The array of possible HTML DOM element identifiers that the script will try. The first viable identifier it finds elements of will be scanned for search terms to mark, the rest is ignored. So the order is important here! Start with the element closest to, but still containing all the post/page title, excerpt or content.
</li>
<li>
<code>hlst_events</code> – The array of DOM event listeners that the inline script will watch for. Default: <code>['DOMContentLoaded','post-load']</code> (on Document Ready and for Jetpack Infinite Scroll and others).
</li>
<li>
<code>hlst_inline_script</code> – The inline script that will be added to the plugin script file. Can be used to add to or alter the inline script. Must return a string.
</li>
</ol>
<h4>Known issues & development</h4>
<ol>
<li>
If your theme does not wrap the main content section of your pages in a div with class “hentry” or HTML5 article tags, this plugin might not work well for you out of the box. However, you can make it work. See the last of the <a href="https://wordpress.org/extend/plugins/highlight-search-terms/faq/" rel="ugc">FAQ’s</a> for an explanation.
</li>
<li>
<a href="http://theveganpost.com" rel="nofollow ugc">Josh</a> pointed out a conflict with the ShareThis buttons plugin. Since then, that plugin has been completely rewriten so please let me know if the problem still exists. Thanks!
</li>
</ol>
Please file bug reports and code contributions as pull requests on <a href="https://github.com/RavanH/highlight-search-terms" rel="nofollow ugc">GitHub</a>.

Highlight Search Terms

Absolutely perfect

Very lightweight (vanilla) Javascript that wraps search terms in an HTML5 mark tag within WordPress search results.

Taxonomy Images vs Highlight Search Terms