Modifications to theme and plugin files to create new functionality.

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243
votes
108answers
123k 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 ...
87
votes
11answers
32k views

Steps to Take to Hide the Fact a Site is Using WordPress?

I have a website for which we are trying to be discreet about the fact that we are using WordPress. What steps can we take to make it less obvious?
45
votes
7answers
25k views

Organizing Code in your WordPress Theme's functions.php File?

The more customization I make to WordPress the more I start thinking about if I should be organizing this file or splitting it up. More specifically, if I have a bunch of custom functions which only ...
23
votes
6answers
13k views

Add validation and error handling when saving custom fields?

I have a function that defines a custom field on a post type. Say the field is "subhead". When the post is saved, I want to do some validation on the input, and display an error message on the post ...
23
votes
4answers
9k views

Database synchronization between dev/staging and production

I have a problem with WP database synchronization between development and production and I am wondering how other people solving it. I am aware about this question but it doesn't really cover the ...
21
votes
1answer
12k views

How to filter post listing (in WP dashboard posts listing) using a custom field (search functionality)?

Despite the fact I googled a lot, I've not found the answer to a very simple question : I have some posts with a custom field (i.e. supplier_name). I would like to be able to search and filter my ...
21
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 ...
18
votes
9answers
6k views

How to structure a plugin

This isn't a question about how to build a WordPress plugin. Rather, what, if any, guides could be applied to how to put together the file architecture of any plugin. Some other programming languages ...
14
votes
2answers
13k views

How To Add Custom Form Fields To The User Profile Page?

The user profile page has the following fields: Username First Name Last Name Nickname Display name Contact Info E-mail Website AIM Yahoo IM Jabber / Google Talk How can more fields be added to ...
14
votes
4answers
11k views

what is the correct way to compare dates in a WP query_posts meta_query

I have a query_posts call in a WP template. Through the use of the More Fields Plugin I can give the site admin the ability to create an event (custom post type) and then enter a date which is ...
12
votes
6answers
12k views

How to remove admin menu pages inserted by plugins?

I've got the following code, which cleans up a lot of stuff that is not going to be used within the admin area: add_action( 'admin_menu', 'my_remove_menu_pages' ); function my_remove_menu_pages() { ...
12
votes
2answers
6k views

Creating an Image-Centric Custom Post Type?

Does anyone have any tips for creating an image-centric custom post type? To elaborate, my blog has rotating header images, shown below: The two images in the top left are randomized, and exist as ...
12
votes
5answers
2k views

Is there anything that Joomla or Drupal can do that can't be done in WordPress? [closed]

I have a client who wants to use Joomla, because they were told it was good. I'm trying to convince them that WordPress is a much more user-friendly option. I've played with Joomla (and Drupal) once ...
12
votes
3answers
4k views

What Is The Use Of map_meta_cap Filter?

What is the use of map_meta_cap filter? This filter is not documented anywhere. I have an unclear idea of what it could be: Used to map the permissions of the user to operations on posts. What ...
12
votes
3answers
2k views

Customizing a WordPress theme without changing it?

I have found and downloaded a theme. However I want to tweak the CSS some to change the design, colours etc. a bit. How should I go about doing this, while still being able to update the theme without ...
12
votes
2answers
614 views

New WP_Customize API - how does it work under the hood?

I noticed that if you make changes trough the new "customize" feature, when you navigate on a different page within the iframe preview document, your changes still apply, even if they are unsaved. It ...
12
votes
2answers
1k views

Specific upload folder for PDFs in custom Post type in WP multisite

I need to filter uploads to a specific folder for a custom-post type called "document" only for PDFs. So far, I have: function custom_upload_directory( $args ) { $base_directory = ...
11
votes
4answers
9k views

Validating Custom Meta Box Values & Required Fields

Something which I have never seen covered is the best way to validate that specific form fields are filled out correctly for custom post type meta boxes. I am looking to get expert opinions on how ...
11
votes
2answers
30k views

How to create a custom search for custom post type?

I have a search field for the blog posts, but I need an other for a custom post type. How can I create this custom search form with a different search result layout?
11
votes
1answer
169 views

How do I make my child theme re-apply the settings that were customised when its parent was active?

Scenario Pick 2015 theme. Customize various settings, such as background picture, header picture, site name and tagline. But don't touch the contents of any of the theme's files. Use Codex' Child ...
10
votes
4answers
187 views

What do you think about custom designed plugin/theme options UIs?

You probably noticed the trend of making custom designed plugin/theme options UIs, especially in the commercial ones (on CodeCanyon for example - custom boxes, tabs, accordions etc). I personally ...
10
votes
12answers
3k views

Is there a blank theme framework compatible with WP 3.0? [closed]

I don't feel like making my own theme from scratch, so I looked for some theme frameworks, but they're all old and when I install them on WP 3.0 they produce loads of errors and don't behave properly. ...
10
votes
2answers
10k views

How to Link External jQuery/Javascript files with WordPress

So I'm using Starkers to base my next WP theme on and I've run into a small issue, I was including my own version of jQuery in the header.php file but when inspecting my site using Firebug I noticed ...
10
votes
1answer
760 views

Multiple Inputs in a Customizer Control

Say I have a single custom control, but this control has 2 inputs that require saving, e.g.: Currency type and value Size and unit of measurement First and last name Text and style Image and image ...
9
votes
6answers
8k views

How to *remove* a parent theme page template from a child theme?

I'm using the TwentyTen theme to create a child theme, but I can't seem to get rid of the 'One column, no sidebar' page template that is in the TwentyTen parent theme. I thought just copying it over ...
9
votes
5answers
9k views

How to use more than 256MB of memory in the admin?

I'm building a site for a photographer who uploads pictures that are normally large for todays digital cameras. Images are quite memory intensive, especially the image operations like creating ...
9
votes
2answers
1k views

How to add plugin to WordPress Repository?

I just made my first plugin and it got approved by WordPress. Great news for me, but now what? The "instructions" on the Codex are anything but clear for me. I did find an article on Dig WP and I ...
9
votes
3answers
2k views

Update widget form after drag-and-drop (WP save bug)

I've posted a bug-report about this a few months ago (on WordPress trac (Widget Instance Form Update Bug)) and I thought I'd try writing about it here too. Maybe someone has a better solution to this ...
8
votes
3answers
12k views

How to get the Date Format and Time Format settings for use in my template?

This is a strange question, but I want to know how I can access the Date and Time settings Admin > Settings > General > Date Format Admin > Settings > General > Time Format I ...
8
votes
8answers
13k views

What does l10n.js do in WordPress 3.1? And how do I remove it?

I just installed WP 3.1 Beta 2 on my test server. I noticed that it ships with a new l10n.js file that gets automatically inserted into the header. I did a bit of digging and it has something to do ...
8
votes
5answers
16k views

Proper Way to Modify Plugin

What is the best way to modify a plugin? I frequently want to make small changes to one or two functions within a large plugin. This is easily done, but I have to use comments to mark my changes and ...
8
votes
1answer
2k views

Add button to TinyMCE bar without creating a plugin

I'm trying to add a custom button or two to the TinyMCE rich text editor. The tutorials I've seen so far are either outdated or explain how to do it with a custom plugin. How can I do this without ...
8
votes
1answer
1k views

Why do I get the timeout warning?

I turned on debug mode in WordPress and the first request of the day I get this error: Warning: http_request() [function.http-request]: Timeout was reached; Operation timed out after 1000 ...
8
votes
2answers
2k views

Anyone figured out how to use WordPress MultiSite with Domain Mapping & SSL?

I've been looking all over to find a solution for SSL with WordPress MultiSite and Domain Mapping. Ideally, I'd like to purchase an SSL cert for each domain (or potentially a wildcard cert) anyone ...
7
votes
3answers
1k views

Is the new WordPress 3.1 admin bar pluggable and how can I extend it?

How can I extend the functions of the WordPress 3.1 admin bar in my plugins? I am looking for specific hooks and filters to use in adding links or other features to the admin bar. A good example ...
7
votes
5answers
15k views

Remove wrapping div and ul from output of wp_nav_menu

I am using the new menu system of Wordpress, and here is the result of wp_nav_menu() <div class="menu-main-menu-container"> <ul id="menu-main-menu" class="menu"> <li ...
7
votes
4answers
815 views

WordPress forks

Are there any forks of WordPress in existence? Optional subtopics: Why did they fork? Differing design goals? (e.g. HTML5 instead of XHTML-syntax per default) From which version / time did they ...
7
votes
4answers
2k views

How can I delete orphan keys in WordPress database tables?

In particular in table wp_options. After almost 2 years of blog production it seems increased a lot, and I don't know how many crap is in there. Do you know a plugin that works with WordPress 3.0 or ...
7
votes
4answers
4k views

How do I append multiple taxonomies to the URL?

Multiple taxonomies in URL How does one append multiple taxonomies to the URL having the following: Post Type: products Taxonomy: product_type Taxonomy: product_brand Adding new ...
7
votes
2answers
5k views

How do I query by post format in WordPress 3.1

I am trying to query for all posts with a post format of 'quote.' I have added the post formats to my functions.php with add_theme_support( 'post-formats', array( 'image', 'video', 'gallery', 'quote' ...
7
votes
1answer
499 views

Custom Post Types, slug, archive and SEO plugins

I made a custom post type called "friends". I am able to correctly list my friends using this urls: http://mysite/friends/friend1/ http://mysite/friends/friend2/ http://mysite/friends/friend3/ ...
6
votes
4answers
12k views

get_the_term_list without links in 3.1

What function will display custom taxonomies associated with a post as text? I'm currently using get_the_term_list which works great for a singular page but not so much when using a taxonomy in the ...
6
votes
7answers
4k views

WordPress Plug-in Development In MVC Architecture, How?

I think, the wordpress plug-in architecture is not MVC. So I want to use/do the MVC architecture in WordPress plug-in development (like cakephp, codeIgniter ). How can I use them in plguin ...
6
votes
7answers
206 views

I'm looking for some good references (manuals)

I started a blog recently. Currently I'm using a free theme and some plugins that are working well enough for now. And, my overall goal is to produce content and not become a WordPress developer, etc. ...
6
votes
2answers
1k views

What are the ADVANTAGES of ORIGINAL wordpress template structure?

Precondition: coming from a Custom PHP applications(using symfony, zend and so on) world, for me it feels unnatural to have template separated in a way that is done in original wordpress theme. e.g ...
6
votes
5answers
3k views

get_pages() not ordering as it should

I'm using get_pages() function to get all subpages from a page like this: $childrens = get_pages(array('child_of' => 7, 'sort_column' => 'post_date', ...
6
votes
8answers
510 views

Backup the Database and Restore from the Backup?

I am using WordPress 3 and would like to backup the database to my computer (a Mac). My webhost is using PHP safe mode, so that sometimes limits what plugins I can use. What is a good way to do a ...
6
votes
3answers
520 views

Is it a good idea to edit an already existing plugin to add more functionality?

I need to add a relatively small bit of functionality to a Wordpress plugin and I have the option to either edit the plugin directly, or scrap the plugin completely and repurpose PHP code from another ...
6
votes
3answers
3k views

Change admin bar to default:off

While I quite like the admin bar I actually want it to be OFF by default instead of ON ( I don't want to disable it altogether because I want users to be able to turn it on if they want - but but I ...
6
votes
2answers
3k views

How to Change 404 page title

i have try many methods after searching on internet but unable to ramove Nothing Found from my 404 page title how to do it please help me even i have us this in my 404 page header if( is_404() ) ...