Plugins are tools to extend the functionality of WordPress. This tag should not be used to mark requests for plugin recommendations, which are off-topic per the FAQ.

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19
votes
3answers
5k views

Where do I put the code snippets I found here or somewhere else on the web?

Many posts here or somewhere else contain code, but they do not say where to put it. Example: I have found this post: How do I turn off 301 redirecting posts (not canonical)? I'm a newbie with PHP. ...
266
votes
108answers
133k views

Best Collection of Code for your functions.php file [closed]

Please vote on the question and any answers you find useful by clicking on the UP arrow on the left hand side of the question or answer. As with many others who are now viewing this post, I have been ...
65
votes
2answers
39k views

Uninstall, Activate, Deactivate a plugin: typical features & how-to

I'm making a wordpress plugin. What are typical things I should include in the uninstall feature? For example, should I delete any tables I created in the install function? Do I clean up my option ...
38
votes
1answer
5k views

What's the preferred method of writing AJAX-enabled plugins?

I'm wondering what the preferred method is for dealing with AJAX calls. Should one use the same plugin php file to process the POST or a separate one? Which is cleaner or safer?
110
votes
9answers
19k views

Tips for using WordPress as a CMS? [closed]

I want to use WordPress as a CMS for a reasonably basic site rather than a blog. I have several pages and at the moment, I don't intend to have a "news" page. While there are ways to make this work, ...
55
votes
18answers
4k views

WPSE Plugin Repository: The plugins that came out of WP-Answers

Link your WPSE-Plugins If you answered a question and made a plugin out of your code, than this is your place to share it. The Idea: An old comment from @MikeSchinkel during the beta phase where he ...
95
votes
12answers
66k views

Adding a Taxonomy Filter to Admin List for a Custom Post Type?

I have created a Custom Post Type called 'listing' and added a Custom Taxonomy called 'businesses'. I would like to add a dropdown list of Businesses to the admin list for the Listings. Here is what ...
16
votes
2answers
4k views

How can I use WordPress functions in my stylesheet?

I have my style.php file looking like this. <?php header('Content-Type: text/css');?> #div{ background:<?php echo get_option('bgcolor');?>; } This does not work, but when I do ...
36
votes
4answers
13k views

Passing a parameter to filter and action functions

Is a way to pass my own parameters to the function in add_filter or add_action. For example take a look in the following code: function my_content($content, $my_param) { do something... using $...
6
votes
2answers
1k views

Custom pages with plugin

I'm developing some plugin where I would like to enable custom pages. In my case some custom page would contain a form like contact form (not literally). When user will fill out this form and send it, ...
14
votes
3answers
5k views

Implementing a CrunchBase.com Clone using WordPress?

I wish to create something like CrunchBase.com with WordPress.org (So to have one website that is a "database", and another one, which is a blog, that connects to it). Is it possible? and how? ...
42
votes
2answers
11k views

Between functions.php, widgets and plugins, which is loaded first?

Customer asks if a specific carousel plugin he uses can be widgetized. That means i should create a widget inside functions.php which calls the plugin's function. That means that the plugin's code has ...
16
votes
5answers
9k views

How can I make add_image_size() crop from the top?

I have a series of posts, all with featured images, but I need to be able to customise the crop top right corner. In this instance, I need them to be cropped from top right, but it would be useful to ...
8
votes
2answers
32k views

How to customise the output of the WP image gallery shortcode from a plugin?

We're building a plugin that displays posts, and we also want to display the image gallery when it is used in a post. However, we need to limit the number of photos displayed? Is that possible?
11
votes
3answers
19k views

How To Activate Plugins via Code?

If possible, how can installed plugins (meaning the files have been placed in wp-content/plugins directory) be activated from other plugins?
13
votes
2answers
2k views

How to load wp_editor via AJAX

Does anyone know how o load wp_editor via AJAX in WordPress? My markup and editor is getting loaded properly but editor controls are not getting loaded properly, it may be because Javascript is not ...
54
votes
4answers
17k views

Best way to initiate a class in a WP plugin?

I've created a plugin, and of course being me, I wanted to go with a nice OO approach. Now what I've been doing is to create this class and then just below create an instance of this class: class ...
32
votes
3answers
31k views

Create custom page templates with plugins?

Is it possible to make custom page templates available from a plugin?
68
votes
7answers
10k views

Updates for a private plugin?

If I write a private plugin, is there any way to use the WordPress auto-update mechanism to update it? I want to encapsulate the functionality, but it's specific to my own 5 or so blogs, so it's not ...
26
votes
2answers
17k views

Disable update notification for individual plugins

Is there a way to disable update notifications for specific plugins? As a plugin developer, I have some plugins installed on my personal site using the svn trunk version for testing, but the same ...
25
votes
4answers
1k views

How to implement a customizable free OpenID authentication?

OpenID is a standard commonly used nowadays. I am trying to implement OpenID on my blog, but I have many difficulties. I tried OpenID plugin but it seems to be incompatible with Wordpress 3.0. I ...
25
votes
5answers
22k views

best way to overide plugin CSS?

currently, I use CSS specificity to override plugin styles. I prefer this to editing the plugin as it makes for less headaches when you update. What would be nice is if my style sheet loaded after ...
6
votes
2answers
4k views

Redesigning Custom Post Type “Add New” page

I've been browsing all over google for a solution to this. I'm writing a custom post types plugin for work to log-in visitors that we get. I initially wrote a mock-up without custom post types, then I ...
6
votes
2answers
1k views

Looking for a Table of Contents (TOC) plugin for WordPress

I am looking for a simple TOC plugin for WordPress that would create a ToC similar to the one from MediaWiki (Wikipedia). Usually I need this only for big pages and the TOC needs to be generated based ...
1
vote
2answers
590 views

How to use a Must-Use plugin to hide a regular one and to hide itself?

When solving this issue ( Change admin language based on user (in single-site) ), I did a function so that the plugin would auto-hide from all users except one (me:). The flaw is that it only auto-...
0
votes
1answer
465 views

Trying to avoid including wp-load.php

I am working a plugin where I am trying to connect an HR system with WordPress. There is an XML API on the HR system so I have written the plugin to take the data and put it into a WordPress database ...
3
votes
1answer
6k views

Where is the best place to use add_filter

Should I use the function add_filter In my plugin's init action hook or just the in the main plugin script? Since sometimes I found people is using filter all over the place and if I put in the init ...
2
votes
1answer
286 views

What are these entries in the database? Looks similar to JSON

So I have been wondering for a while now what these entries are and what they do, also what the format of them are. They look similar to JSON but are definitely not JSON. a:1:{s:12:"jetlocations";a:...
36
votes
16answers
4k views

How do you debug plugins?

I am pretty new to plugin authoring and was having a hard time debuging. I used lots of echo and it is sloppy and ugly. I am sure there is a better way to do this, maybe an IDE with a debugger that ...
8
votes
8answers
14k views

wordpress on localhost lamp doesn't let me install plugins

i've installed a LAMP server on my ubunutu 11.04. i've installed wordpress and hooked it right with the MySQL db. i've changed the permissions of the www-data group to read and write files. every ...
7
votes
1answer
703 views

How to create a flexible abstraction for WP_Query?

My question is about php but it involves wordpress as i am creating a plugin. The case is that i have 5 questions, each question have 6 choices and one choice to choose from each. Now the person would ...
6
votes
5answers
4k views

Wordpress 3.5 Media Manager - add a button

In my plugin, I would like to add two buttons to Media Manager (to the left of "Insert Into Post" in "media-toolbar-primary" section), and connect a jQuery action to it. First one - The "Select All" ...
7
votes
4answers
4k views

Update plugin from personal API

I'm developing a wordpress plugin at the moment which I do not want in the Wordpress plugin repository. However I still want to be able to push updates to my costumers from my own API repository. I'...
9
votes
2answers
8k views

List all sidebar names?

I'm listing all sidebars like that: global $wp_registered_sidebars; echo '<pre>'; print_r($wp_registered_sidebars); echo '</pre>' So I'm getting something like: Array ( [sidebar-...
8
votes
1answer
4k views

Restricting a Plugin to Only Load its CSS and JS on Selected Pages?

I'd like to cause a plugin to restrict its loading of CSS stylesheets and JavaScript JS files to only those pages for which they are needed. An example for my question is the plugin Contact Form 7 ...
6
votes
1answer
3k views

Is it possible to define a template for a custom post type within a plugin independent of the active theme?

I'm writing a plugin to manage data about open-source projects. I developed an object model and have successfully created all custom post types and taxonomies, as well as implemented the correct ...
44
votes
2answers
6k views

Do deactivated plugins slow down a WordPress site?

Most people are aware that minimizing the number of plugins used is a good way to help keep a WordPress site running fast. However, does that general rule include deactivated plugins?
1
vote
2answers
964 views

How to use WP-FirePHP extension?

http://wordpress.org/extend/plugins/wp-firephp/ I'm simply supposed to call fb('Error message','Lable') but it doesn't work all the time. I can't figure out when and where the relevant files are ...
3
votes
4answers
11k views

Can't install new plugins because of the error “Could not create directory”

A faculty member is having difficulties with a instructional wordpress install. Fixing individual permission problems has been hit and miss, and have become a perennial pain, so I'll ask here. What ...
8
votes
2answers
317 views

Can I leave off plugin textdomain for terms used in core?

I've got a plugin that puts post statuses into post type admin menus. I'm in the middle of internationalizing it, and I'm wondering how to handle this situation. The plugin uses some unique strings ...
1
vote
1answer
313 views

Stackoverflow type of badge plugin giving warnings in Wordpress 3.5

I modified an abandoned Stackoverflow form of badge plugin to work with Wordpress 3.4.2 and it does indeed. The full script for it is here: http://pastebin.com/Ta91zXiL When upgrading to Wordpress v3....
0
votes
2answers
1k views

How to override shortcodes.php core file?

I would like to override/update to core shortcodes.php file. Build an array and send data differently to other functions, but my question is how to do that without editing the core file? Is there a ...
22
votes
4answers
6k views

How can I stop WordPress from prompting me to enter FTP information when doing updates?

How can I stop WordPress from prompting me to enter FTP information when doing updates?
16
votes
4answers
847 views

Who are the most trusted plugin developers? [closed]

Note: Please vote on the question, and any answers you find useful by clicking on the UP arrow on the left hand side of the question or answer. There are so many plugins out there. Whose plugins can ...
13
votes
3answers
6k views

Are there any hooks that alter the 404 logic?

Provided you have a 404 page defined in your theme, Wordpress will display a 404 page if "tag" is defined in $wp_query->query_vars, and there are no posts matching that tag. I'm writing a plugin that ...
12
votes
6answers
3k views

How to include code only on specific pages?

I'm learning about plugins and shortcodes. I noticed that when I activate my plugin its code gets loaded on all of my pages-- even pages that don't have my shortcode. (I don't mean content vs. admin ...
9
votes
2answers
5k views

How to Remove Certain Screen Options and Meta Boxes from add/edit post type?

Now, when you add or edit a particular post within your desired post type, there are more screen options as well. Although, these Screen Options are showing/hiding meta boxes. I would like to be able ...
13
votes
2answers
1k views

How do I exclude plugins from getting automatically updated?

There is an opt-in filter that allows all plugins on my site to receive automatic updates: add_filter( 'auto_update_plugin', '__return_true' ); I like this feature, but I don't want all my plugins ...
5
votes
1answer
2k views

How to make simply “report” button on posts

I'm building up a video-site using wordpress. It embeds videos from different sites. I really need a simply "Report broken video"-button that saves the url in a database or emails it to me. I've ...
4
votes
2answers
3k views

Preserve custom URL parameter on more pages

I created a custom URL parameter for sorting posts by their vote scores. I have a "most voted" link that sends a ?sort=most_voted URL paramater and using a query posts filter I display posts with most ...