A function is a sequence of program instructions that perform a specific task. It is packaged as a unit that can be used wherever the according task should be performed.

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2answers
1k views

Set JPEG compression for specific custom image sizes

I use various custom image sizes (by add_image_size) and I have set my JPEG compression to 30% with this filter: function jpeg_quality_callback($arg) { return (int)30; } add_filter('jpeg_quality', ...
5
votes
1answer
846 views

how to group custom post types

hi wanted to know do i group my custom post types to appear together in a group in the wordpress back end menu bar like this below in the picture what code do i have to use in my functions.php so that ...
5
votes
2answers
3k views

Function to execute when a post is moved to trash .

Hi is there an action which can be performed while a post is moved to trash .... I tried delete_post and deleted_post. It works but twice for each action ( before and after the action as written in ...
5
votes
1answer
4k views

remove links from images using functions.php

I am looking for a way to remove the attachment link from images in the post content. I would like to add this to the functions.php in my theme. I know you can disable this in the post on a per ...
5
votes
3answers
3k views

Passing arguments to a admin menu page callback?

Situation: I'm working on a plugin and I'm developing it as a class, everything worked fine until I run into this situation. I wanted to make things a bit cleaner and tried this.. class MyPlugin { ...
5
votes
2answers
2k views

How can I get $id variable in widget's form function?

How can I get $id variable in widget's form function? According to widget's structure I see that widget function have $args as a parameter, which will be extracted in function's body. In my case i ...
4
votes
4answers
357 views

One Child Functions.php for Multiple Child Themes

I have a wordpress setup that I use for clients with around 30 or so child themes that they can choose from. Each child theme has it's own functions.php file currently. Is it possible to setup just ...
4
votes
3answers
8k views

Link to user's profile settings page?

I'm trying to figure out how to link a logged-in user to his profile settings, but I can't seem to find a function that generates this link (like wp_settings_url() or wp_profile_url()) Is there a ...
4
votes
3answers
4k views

Perform an action when post is updated/published

I'd like to run a custom query using some meta data whenever a post is updated or published. Is there something I can put in functions.php to fire when those events occur?
4
votes
7answers
5k views

Include files in child theme functions file

Typically in my theme function file I'll require other files to keep things neat. require_once("foo.php"); Now working in a child theme I'd like to do that same. I'm adding custom admin options and ...
4
votes
3answers
1k views

clients list using wordpress

I am using wordpress for my new website and i have list of clients(name and their logos). I am confused how to make those editable using wordpress? Html as follows... <ul> <li><img ...
4
votes
4answers
255 views

Display custom comments field for first level only

I have simple fuction that adds additional comment form field called "Subject": add_action( 'comment_form_logged_in_before', 'additional_fields' ); add_action( 'comment_form_before_fields', ...
4
votes
2answers
643 views

Shared functions.php across multiple WordPress websites

I find myself using many of the same snippets of code for my functions.php file in new websites. Is there a method I can use to create a few different shared functions.php files to use across my ...
4
votes
3answers
147 views

How to restrict actions and filters “properly” by conditions

Which one is correct when adding actions/filters/etc.... Both methods work fine and I've seen people do things both ways, but I'm assuming one is correct. My gut tells me that wrapping the if ...
4
votes
5answers
4k views

Relative URLs and hide /wp-content/themes/

in my header and other sections I would like to use <script src="/incs/js/script.js"></script> While maintaining the default theme folder structure in server as below ...
4
votes
3answers
525 views

Plugin update error message

I'm working on a client website where the framework requires a specific plugin version to work properly. With the follow lines of code in my functions.php file, it stops the plugin from updating ...
4
votes
2answers
436 views

Replacing Icons in the Dashboard

Is there a way for me to replace the icons in the WordPress Dashboard with custom ones? I'm imagining there's got to be a way to do this with the functions.php or, more ideally, with a custom-built ...
4
votes
2answers
511 views

Removing default image size list in Media Box

I trying to remove unused image size (Thumbnail, Medium, Large) in MediaBox Any function can i use in functions.php ? or some trick ? PS : I know i can use jQuery trick but any better function to ...
4
votes
1answer
1k views

function deactivate_plugins does not exist

I am getting function deactivate_plugins does not exist error when calling this function function deactivateSelf(){ deactivate_plugins(RSD_PLUGIN, true); //gives error: function ...
4
votes
3answers
137 views

bloginfo() vs get_option?

What's the difference between: bloginfo('name'); vs get_option('blogname'); The parameter is just an example, but I see no differences in terms displaying what I want. Are there any particular ...
4
votes
2answers
2k views

Excluding iPad from wp_is_mobile

I am eperiencing a very annoying problem. I built my website with media queries and is_mobile (thinking is_mobile would be the same as smaller screens. How foolish of me.) but after some testing ...
4
votes
1answer
156 views

function_exists call in function.php

In the function.php file of the twentyeleven the setup function checks to see whether it exists before running it: if (!function_exists('twentyelevent_setup')): function twentyelevent_setup() { ... ...
4
votes
1answer
523 views

Can I turn off write-in tags/taxonomies?

One of the big problems my site staff has had with tags is the overwhelming number of similar or duplicate tags, due to the write-in ability. I'm about to add new custom taxonomies to my site for ...
4
votes
1answer
1k views

Remove a menu item created by a plugin

I'm trying to remove a menu item and tried several approaches, but have not had any luck. It was created from a FAQ plugin. If I use this line: remove_menu_page( 'edit.php?post_type=question' ); ...
4
votes
2answers
2k views

Enabling Sessions in WordPress 3.0

Im using a wfcart in my WordPress site but for some reason on certain pages WordPress drops the session I'm wondering if there is a way to enable sessions in WordPress 3?
4
votes
1answer
64 views

How to add classes to images based on their categories?

I need to be able to: 1.) assign categories to images and 2.) add classes to all images that correspond to their assigned categories. I was able to add categories to images with the following: ...
4
votes
2answers
610 views

mysql custom wp query

this code is designed to select posts with selected meta value in wordpress query <?php $values = $wpdb->get_results("SELECT DISTINCT meta_value FROM $wpdb->postmeta WHERE meta_key = ...
4
votes
1answer
3k views

Solution to render Shortcodes in Admin Editor

I have asked this question about a year ago and I am hoping there is some type of simple solution which will allow me achieve my objective. So here it goes: I often utilize shortcodes within the ...
4
votes
2answers
207 views

Notify users whenever a new post is published based on their preference

I have put together a custom registration form on my WordPress site and one of the items on the registration form is an ability to select an interest. Essentially I have the following code from the ...
4
votes
2answers
243 views

current_cat_ancestor Alternatives

It looks like adding current-cat-ancestor class to category list was proposed, but never implemented. The only way I've been able to find so far is to re-create the wp_list_categories() function ...
4
votes
1answer
2k views

Using functions from a plugin in your theme

I am a beginner to wordpress (and to php for that matter). I am trying to understand some of the basics, and building a little e-commerce store using a plugin called "Jigoshop." I'm reading through ...
4
votes
2answers
785 views

Build a content and excerpt grid loop with paging and options for # of posts

What I'd like to do: on index.php, a loop that shows a selectable number of full posts using the_content and then below that shows a selectable number (the number of posts can be hardcoded in the ...
4
votes
1answer
2k views

How to export comments in WordPress?

I want to export my comments to Excel, PDF or Word. The format really doesn't matter, I just want them exported. I tried the Export Comments plugin, the standard one, but couldn't get it to work, I ...
4
votes
1answer
2k views

wp_get_attachment_image returns different image size

It is a bug? wp_get_attachment_image( $attachment_id, 'post-thumb-size-small'); Same code, called in template, and in AJAX call returns same image SRC, but different image width and height. dumb ...
4
votes
2answers
791 views

Prevent publishing the post before setting a featured image?

As the title says , I want a plugin/function to prevent/inform the user when he tries to publish the post without setting the featured image. ANY HELP ???
3
votes
4answers
7k views

How do I remove UL on wp_nav_menu?

I search on this site and found many answers for this question. Most of them is not working on my theme. Here is a one solution I found and it's working according to my need. function ...
3
votes
2answers
3k views

How to detect single.php (but not single-portfolio.php)?

When I'm using is_single(); in my <head> section to add some style to website navigation it executes correctly on blog posts but it also executes on single "portfolio" post type posts (so ...
3
votes
2answers
7k views

Get the ID of the page a menu item links to?

I am currently using a custom walker to customize the output of wp_nav_menu(), and I am trying to add additional information to the <a> tags. What I want the output for each menu link to look ...
3
votes
3answers
2k views

Forcing all posts associated with a custom post type to be private

Does anyone know of a way to add code to the functions.php file which will automatically force all posts belonging to a custom post type to be "private" and/or "password protected" with a default ...
3
votes
5answers
2k views

Removing custom background and header feature in child theme

I am creating a child theme using twentyten as my base. I am looking for a way to remove the features of adding custom header and background without touching functions.php file in the parent theme. ...
3
votes
1answer
3k views

How do I make my function add variables/values to the $post object?

How do I add $tzDesc and $tzEmbed (and other variables) to the $post object in the following function so that I can display the values in my theme files by inserting <?php echo $tzDesc; ?>? ...
3
votes
2answers
88 views

How to count number of functions attached to an action hook?

I have some actions like this function simple_notification() { echo '<div>This is a notification</div>'; } add_action( 'site_notices', 'simple_notification' ); ...
3
votes
3answers
837 views

Child theme functions.php do I use php open and close tags?

I setup a child theme which works fine. It's importing the main style.css and has custom css styles along with custom header.php and footer.php files When using functions.php in a child theme it's ...
3
votes
5answers
2k views

wp-admin page is blank

Something is wrong with my wp-admin page, it just shows up blank. I am pretty sure it has to do with my function.php file there is no whitespace on the top or bottom, but when I delete it completely, ...
3
votes
2answers
4k views

Get user id from email?

I'm working on an email system, and I'm onto the unsubscribing stage. Since most of my users would not know their user ID, I'm asking them to put their email into a text box (definitely preferred, ...
3
votes
3answers
781 views

Add Useragent to the body class?

I'm looking for a way to add body class depending on the User Agent of the client with php. I'm looking to implement it this way: page.php: <body id="front" <?php ( function_exists ( ...
3
votes
3answers
3k views

Add new “Insert Into Post” button with another function

Problem: Add a hook that automatically adds a short tag to video attachments when inserted from the Media Library (video) tab: Update: This works under the 'Media Library' tab — and doesn't break ...
3
votes
1answer
2k views

Warning/Notice about functions.php

I have trouble about the notice shows on the top of the home page as: Notice: load_plugin_textdomain was called with an argument that is deprecated since version 2.7 with no alternative available. ...
3
votes
1answer
2k views

What is the correct MIME type for PSD (Photoshop)

I am trying to create an upload area (frontend) for word press users on a site. I've got a lot of types opened up through some function calls, but unable to correctly get PSD support. I'm seeing a lot ...
3
votes
1answer
1k views

How to paginate the get_users function?

Im using the get_users function to show a custom list of users on the site. The only issue Im having a problem figuring out now is how to paginate the result. This is a sample of the function that Im ...