WordPress Plugins allow easy modification, customization, and enhancement to a WordPress blog. Instead of changing the core programming of WordPress, you can add functionality with WordPress Plugins.

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1answer
78 views

Adding dynamic section to WordPress

[Edit: I've added a more concrete example below] I need to convert a custom PHP site to WordPress. The site has 60,000+ media items along with a ton of metadata, all of which needs to carry over to ...
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1answer
93 views

Adding content before the loop in category pages

I am creating a plugin and I want to show all sub category list in the top of every category page. I had created a function and call "wp_list_categories" in that function. The problem is when I call ...
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1answer
99 views

An echo line in a transition_post_status action leads to “cannot modify header information - headers already sent by”

I tried to set up an action hook with transition_post_status. Inside I wanted to set up a few conditional statements. To see if everything works I wanted to place a debug statement. Problem is as soon ...
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2answers
2k views

$_POST form request with admin-post

I tried to use a form with the following markup using the action admin-post.php <form method='post' action='admin-post.php'> I'm using the action hook suggested by Wordpress to proceed the ...
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0answers
293 views

Modify how gallery.js builds the shortcode [gallery …] in tinyMCE?

The post editor helpfully removes default arguments like columns="3" from the [gallery] shortcode. How do you tell it to remove a custom attribute that has a default value? The answer at Enhance ...
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1answer
595 views

Mediaelement.js feature doesn't work

I am trying to add new feature to mediaelement.js. Here's one example http://mediaelementjs.com/examples/?name=loop Another example which I am trying to implement now is this- ...
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1answer
5k views

Wordpress metabox file upload in custom post [duplicate]

I'm relatively new to wordpres development and am stuck at this issue. I have created a custom post type which shows up in the admin menu. I need a metabox in it with a file upload field. The metabox ...
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1answer
2k views

Add async script

I am working on a plugin that has to inject a script on pages (something like RefTagger), which would be easy using wp_enqueue_script, but there are two reasons I cannot do that: the script tag has to ...
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1answer
539 views

Saving Plugin settings to the database

I'm not a complete novice with php or wordpress but am wanting to approach this problem the most efficient way so believe asking here will help. I've got a plugin that randomly generates a quote - ...
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1answer
326 views

Hello dolly type plugin that allows people to add their own

I am making a plugin that shows a random joke on a custom 404 page via shortcode and it is basically near enough the same as the default hello dolly plugin, where the jokes are hardcoded into the ...
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2answers
90 views

Calling apply_filters on non-documented hooks

I have been trying to learn how to write plugins and I thought the best way would be to look at other plugins. I was taking a look at this one and the first lines /** * Plugin Name: Media Library ...
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1answer
40 views

update_meta_user difference in i:1 and b:1, how to write b:1

This code leads to wp_cababilities being written to the database but with an i:1 in front. if( $new_roles === 'administrator' ) { $capabilities = array ...
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1answer
79 views

Create a Page via plugin

My problem is to show a list of products read from db tables. I know how to read them and I am able to produce the table, but only using a shortcode embedded in a page that I've created via WP. I ...
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1answer
877 views

Multiple entries in get_option results? or why is _multiwidget set to 1?

I am developing a wordpress widget, and need to store some user configuration values, that is why I am using wordpress update_option and get_option. I am new to widget development. I have some ...
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1answer
195 views

Render content after post title in wp-admin

I want a plugin to place custom content below the post title, and to the right of the permalink. However, I cannot find a specific action reference to hook into. The screenshot demonstrates the ...
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1answer
45 views

How to use is_multisite() in a must-use-plugin?

I want this code to be executed in a plugin in the mu-plugins folder. When executing in functions.php everything works fine, but when I try it as a plugin in mu-plugins this creates a blank page. if ...
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1answer
507 views

Registration Form Validation in wordpress

I have validate the custom field in registration form, I read out the codex of wordpress so that itself i do this way. But I figure out it throws error like this one Call to a member function add() ...
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1answer
518 views

When is it too late to call the action wp_enqueue_scripts?

I'm creating a plugin that always enqueues a script in the footer. I also have a function that if called would enqueue an additional script that depends on the other one. Here is the basic format of ...
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5answers
10k views

what's the meaning of the field wp_capabilities in table wp_usermeta

I am new to wordpress, in table wp_usermeta I notice that we have a row meta_key meta_value wp_capabilities a:1:{s:13:"administrator";b:1;} First, what's the meaning of ...
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1answer
180 views

Why are two functions over-riding each other?

I have function in my plugin that is: add_filter('comment_text', 'commentimage_comment_text'); function commentimage_comment_text($comment = '') { $options = get_option('commentimage'); $id = ...
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2answers
2k views

How do I only load js on the post-new.php and post.php pages in admin?

I have some script that is loading in the admin. I only need it to load on the new post and edit posts screens. What is the best way to do this?
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1answer
128 views

Custom Post Type Navigation on Custom Field

I'm working on a Custom Post Type sorted on a Custom Field. No problem when I list out the posts. But when I go to the single post page for one of these, I want the Prev and Next navigation links to ...
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1answer
179 views

Using ob_get_content to get_search_form puts into infinite loop

I am trying to change the look of my searchform. It basically needs to have two text fields. I want this to be in form of a plugin, which anyone can activate. SO obviously I do not have any control ...
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1answer
77 views

Adding Second Plugin Author

Background: I have a few plugins in the WordPress directory and have recently made the decision to team up with another individual to grow one plugin faster. I'm planning on adding him as a plugin ...
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2answers
867 views

Saving metabox repeatable fields

This is a code that I'm adapting from https://gist.github.com/2057532. The problem is that I'm not being able to save the content from the new fields that I created. I had checked the other questions ...
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1answer
2k views

How to determine wordpress base path when wordpress core is not loaded

I have a command line script for maintaining a wordpress plugin and have to determine the wordpress base path to be able to load the wordpress core. I could just assume the script is several levels ...
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2answers
133 views

Failed to invoke other hook from the init hook

Related to this question (Use wp init hook to call other hooks?) but not the same. Sometimes, I found that the hook will failed to run when I place inside the init hook, e.g. Not Work: ...
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2answers
604 views

how to not show plugin in admin area

I'm just getting started with wordpress development. I'm trying to create a simple plugin that show results from a db in a table. I can do this, but I'm having trouble with the plugin showing at the ...
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1answer
363 views

Plugin Settings not Saving on Ajax re-ordered table

This is an extension of Update Option Stored in Multi-Dimensional Array which was help getting draggable plugin options to save via ajax (which works), but unfortunately this is specific to the actual ...
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1answer
239 views

How to post form in ajax mode and handle it in wordpress

currently I can only do it in a normal non-wordpress way. So, does wordpress provide a solution for this circumstance?
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2answers
1k views

Using Ajax call in jQuery doesn't work in widget

So I'm in the midst of creating a new conversion widget and I'm having some trouble getting the Ajax call to work in my widget. (works perfectly outside of WordPress). The problem at the moment is ...
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2answers
556 views

Wordpress Settings API: saving multiple rows of similar data

I've been experimenting with the plugin options starter kit but can't find a way to save multiple rows of similar data using the Settings API. Example of what I'm trying to save: ...
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1answer
169 views

Master menu item for multiple plugins?

I guess this question is more or less about aesthetics and organization rather than functionality, but I'm curious nonetheless... I know I can add a custom menu item in the dashboard for my plugin ...
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2answers
1k views

Upload to a remote server using wp_remote_post

I'am developing a plugin that will push files to a remote server via http upload. Currently I got it to work with CURL doing something like this: $post = array("post_file"=>"@/path/FILE.EXT"); ...
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3answers
4k views

Add post thumbnail from external image with plugin

I'm currently writing a plugin modifying the post content with the wp_insert_post_data filter. While doing that I would also like to add a post thumbnail using an external image url. It doesn't really ...
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1answer
823 views

Is it possible for a plugin to register a page template file?

Is there a way for a plugin to house page template files and have them available after plugin activation? E.g, I have a plugin that requires specific page page templates to be used, so I'd like ...
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1answer
173 views

Force plugin to fail activation

I'm writing a plugin that will be using custom fields added by a theme. Because of this, it would be ideal if my plugin not be able to activate should these fields not exist. How do I go about ...
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5answers
361 views

Problems with removing admin bar

I am trying to remove the admin bar from a theme front end of a theme. I found the following code block: add_filter( 'show_admin_bar', '__return_false' ); remove_action( 'personal_options', ...
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1answer
4k views

wp_mail not recognizing cc and bcc headers

I am using WordPress 3.1.3 I am getting following notices when I use wp_mail with cc and bcc headers. Notice: Undefined variable: cc in ...
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1answer
1k views

How to use WP default post list tables in a plugin?

I'm developping a plugin to manage a base of users and I'd like to show them in the same type of table used in other parts of the WP admin (post lists, user lists, etc.), I'd like to have the same ...
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2answers
2k views

How do I determine if a category exists by ID?

I know I can get a categories ID by calling get_cat_ID('category-slug'), however, what is the method to call to determine if a category exists by ID when you don't know the slug? In other words, I ...
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2answers
327 views

How can I view all WP generated thumbnails in Media Manager?

When WP creates thumbnails from the original uploaded image, they are hidden from view inside the Media Manager listing. Can they be made visible, via some filter or action so that you can selectively ...
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2answers
209 views

Is it possible to use add_filter from a theme to alter a plugin's function?

Can add_filter() be used to intercept a plugin function? I'm not having any success, so I'm thinking perhaps I'm doing this wrong. The plugin is "All in One SEO" and the function I'm trying to ...
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1answer
469 views

How can I limit the amount of characters used for description in the manage categories grid?

My category descriptions consist of whole pages of content. When I view the manage categories screen, the grid does not truncate the text but rather, shows all of it. I realize I could turn off the ...
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3answers
470 views

Plugin options table,is the data serialized

I am planning on building a plugin and i need to know if the data stored in the options table i will create for the plugin will be serialized or it will be in the ordinary sql format.
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1answer
770 views

Converting theme widgets to plugins?

i need a help, i have a theme, where in i have a twitter widget, i just want to separate it, and keep it in different file, as if it is a plugin, here are is the complete code, what i have to do? ...
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2answers
253 views

How can I call “preview post” from wp_remote_get with authentication?

I've got a plugin that needs to interogate the post preview (the contents of the rendered page that's presented when the user clicks "Preview Post". To attempt to obtain this input stream into a code ...
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1answer
575 views

What URL do you pass to wp_remote_get to load the body of the current post's preview?

In the code below, I'm attempting to get a reference to the body content of the current post's fully rendered preview... $response = ...
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2answers
230 views

How to determine, from plugin script, if active theme has <h1>The Post Title</h1>

My plugin needs to know if the currently active theme places the post title in H1 heading tags? I'm looking for suggestions on approaches to create script that could discern this. UPDATE: The plugin ...
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6answers
5k views

The plugin generated 80 characters of unexpected output!

I'm getting this message each time I activate my plugin: The plugin generated 80 characters of unexpected output during activation. If you notice “headers already sent” messages, problems with ...