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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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
1answer
5k views

What is the “with_front” rewrite key?

I have the following line in a register_post_type function: 'rewrite' => array('slug' => 'Newsletters', 'with_front' => false), I understand what the line does in general (adds ...
6
votes
4answers
5k 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 { ...
6
votes
1answer
2k views

Set media upload attachment link to none and hide it in WP v3.5

In the Media upload popup page, how do I set the attachment link to none and hide it in Wordpress version 3.5? The following filter worked fine in earlier versions of WP: function ...
6
votes
1answer
131 views

Does hooking into the same action multiple times drain memory?

Currently I have three functions that run on pre_get_posts. I call them like this: add_action( 'pre_get_posts', 'private_groups' ); add_action( 'pre_get_posts', 'search_results' ); add_action( ...
6
votes
1answer
7k 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 ...
6
votes
2answers
2k views

How to add a custom metabox to the Menu Management admin screen?

Although I am very thankful to the wordpress core team that they have finally integrated native menu management capabilities I get frustrated with some key elements which I would like to change. I ...
6
votes
2answers
217 views

How do I use the WP image functions in a page template?

Wordpress has tons of mature code for image editing on the admin side, but I would like to provide a form inside of a custom page template for my visitors to drag and drop, crop and save a thumbnail ...
6
votes
1answer
216 views

Gettext details

I've got a few gettext() questions that are not covered anywhere in WordPress Codex but I think they are important. __('string') in THEME should be used for strings that are likely to be present ...
6
votes
2answers
1k views

Extract image from content and set it as the featured image

The problem: I'm posting from the Wordpress iPhone app. When adding an image, the image shows up in the description itself, which I don't like. What I'm trying to do: Remove the image from the ...
5
votes
6answers
4k views

Is it possible to rename a post format?

Since WP 3.1, it's been possible to use Tumblr-style post formats. I want to use the 'aside' option in a theme, but I want it to have a different title in the WP admin area. So, for example, when a ...
5
votes
5answers
10k 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 ...
5
votes
3answers
11k 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 ...
5
votes
4answers
664 views

Should I write a PHP function in home.php?

I am trying to learn WP Theme development. And as I have understod all "wp core" functions should be placed inside functions.php. But what about custom functions? Lets say I would need a simple ...
5
votes
3answers
6k views

Difference between the_permalink() and get_permalink() function

In WordPress I am using both the_permalink() and get_permalink() functions, but I cannot get any difference in the output of both functions. What is the difference between both functions?
5
votes
2answers
160 views

Is there a hook or function I can use to display all theme files being used on a current page?

Basically I want to be able to see the names of files on the front-end - not just templates e.g. category/page templates, but the actual theme files like header.php/sidebar.php/footer.php and so on. ...
5
votes
4answers
3k views

Is it possible to remove the “standard” post format?

I'm using post formats heavily on a project, but have no current need for the standard option. Beyond being an unnecessary bit of UI, it actually causes broken behavior if it does get mistakenly ...
5
votes
1answer
158 views

How to get the image EXIF date/time and use it for the WP post date/time

I currently have the following working function. add_action('add_attachment', 'create_post_from_image'); function create_post_from_image($id) { if (wp_attachment_is_image($id)) { $image = ...
5
votes
1answer
2k 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
2answers
2k views

Modify Admin Bar Link

Starting on line 474 of /wp-includes/admin-bar.php there is a function that is declared as the following: function wp_admin_bar_new_content_menu( $wp_admin_bar ) What it does it generates the + New ...
5
votes
3answers
2k 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 ...
5
votes
2answers
4k 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
4answers
3k views

Removing Metabox for “Slug” without removing functionality

Here is an interesting question. I have recently noticed that if you utilize the code remove_meta_box('slugdiv', 'post', 'normal'); you are actually unable to modify the slug when you click on ...
5
votes
1answer
126 views

Automatic Logout on from another active session

I have a made application over Wordpress for premium user where user can see page after logging into his account. but there is issue that same user can login form multiple computer, so I want to make ...
5
votes
2answers
558 views

username_exists() function can't be access without logging in

I'm using the following function in functions.php to check if a username exists in the DB function check_username() { $username = $_POST['user']; if ( username_exists( $username ) ) { ...
5
votes
1answer
1k 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
1k 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 ???
5
votes
2answers
3k 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
379 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
7answers
10k 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
10k 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
3answers
2k 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
2answers
10k 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 ...
4
votes
4answers
510 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
5answers
8k 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
2answers
1k 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
217 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
3answers
2k 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 ...
4
votes
3answers
4k 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 ...
4
votes
2answers
75 views

Check if the user has explicitly set an excerpt

Is there a way for me to check if the user has explicitly set an excerpt? I need to call the excerpt only if they've specified something in the excerpt field, and not an automatically shortened ...
4
votes
2answers
2k 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
3answers
311 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
1answer
3k 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
714 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
2k 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
568 views

How do I replace a function, declared inside a plugin's class, in functions.php?

I want to modify a function in a plugin. It is declared in the plugin's main file like this: class WCPGSK_Main { ... public function wcpgsk_email_after_order_table($order) { ... } } Add ...
4
votes
1answer
232 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
2answers
4k views

Manually set global $post vars with an ID, in order to use template tags

I have a function retrieving ID's of posts by very specific means. I need to be able to set the global $post in order to use functions like the_content(), which does not allow an ID as a parameter. ...
4
votes
1answer
595 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
2answers
46 views

syntax for remove_filter in parent theme with class

I'm trying to remove a filter on the register_url hook a parent theme added, that seems to have a class nomenclature I can't figure out. Ordinarily, a filter for this hook would be easily added like ...