HTTP headers are what is sent to the browser before the page markup. They often include the page MIME type, charset, status code and encoding. Headers are often overridden to change the page MIME type or redirect the user.

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17
votes
3answers
10k views

Why won't wp_mail() let me set the From: header when plain old PHP mail() will?

When I use wp_mail( $to, $subject, $message, $headers ) (with values in place, of course), the email gets sent with a from name and email that isn't set anywhere I can find (not even in PHP or Apache ...
7
votes
10answers
7k views

Wordpress Plugin Development - Headers Already Sent Message

I'm developing Wordpress plugins. When i activate my plugin, i'm getting a message The plugin generated 293 characters of unexpected output during activation. If you notice “headers already ...
6
votes
2answers
394 views

Auto get_header and get_footer on every template?

Is there a way to automatically run get_header() at the beginning of template and get_footer() at the end of it? Currently my code is too repetitive with those calls. I've been looking for a way to ...
6
votes
3answers
3k views

WP function/filter for modifying http headers?

Is there a dedicated WP function, action or filter to use when adding/modifying the HTTP headers? For now I just hook a PHP header() call into the WP 'init' hook like this: add_action('init', ...
6
votes
3answers
591 views

Math notation on WordPress.com?

I am a new user with WordPress, and I would like to use mathematical formulas. I have been reading the mathjax pages for hours, such as this one and quite a few others. This may be a bad question, ...
6
votes
3answers
2k views

External page integrated into WordPress returns a 404 error

I have a script that I'd like to call via AJAX from my WordPress theme, it relies upon some core WordPress functions so I am including WordPress blog header like so: define( 'WP_USE_THEMES', false ); ...
5
votes
6answers
4k views

Add header and footer to WP backend

I want to add a header in the backstage in order to look more blend in like the frontend. Nothing much I want to add, just the header and footer is enough. The content section remains the original ...
4
votes
2answers
2k views

Disable h1 and h2 from rich text editor combobox

In the Wordpress control panel, when writing a new post, I would like to disable the Header 1 and Header 2 from the text formatting combobox, because I already use them on my theme (h1 for blog name ...
4
votes
2answers
2k views

Why is wp_redirect() preferable to a standard PHP header redirect?

In asking a question about hooks and redirects, I was advised to use wp_redirect in place of the PHP header function. Just wondering why wp_redirect is preferable?
3
votes
3answers
10k views

How to add code to Header.php in a child theme?

I'm creating a child theme for the first time and I had a few questions regarding code added to header. In a non child theme there is certain code I add to my header.php file such as google ...
3
votes
3answers
5k views

How to prevent wordpress from loading old versions of jquery in wp_head();?

I noticed my twenty twelve theme is including outdated versions of jquery and js so I want to replace the scripts with the newer versions, however the scripts are in the file included by wp_head() ...
3
votes
3answers
5k views

How to set custom cookies before output

What's a surefire way to check/set cookies before the php headers are sent? Is there an action or filter that would be the best place to hook a setcookie() function?
3
votes
1answer
165 views

Get file headers in custom file

in my one of my plugins i have modules (kind of like plugins in a plugin), is there a function like get_plugin_data() or wp_get_theme() that will allow me to get the header section of a custom file ...
2
votes
2answers
7k views

Admin bar and fixed header issue?

I've styled my header to have a fixed top position. While logged in to wordpress, the wp admin nav bar covers the top section of my header making imposible to access my top navigation. I would like ...
2
votes
2answers
296 views

Loading different JS for http and https

I'm using a third party JS file. And they have both http and https version. My site have some pages loading in https while most of pages are in http. Now my question is could I do something in ...
2
votes
3answers
4k views

Adding rel=“next” & rel=“prev” for paginated archives

Does someone perhaps know a plugin or snippet (besides Yoast's WordPress SEO) to accomplish this perhaps? Pagination with rel=“next” and rel=“prev” The only thing I've come across seems to be an ...
2
votes
2answers
2k views

Headers already sent error with CSV export plugin

I have built a Wordpress plugin that allows the user to export all pages, with their levels and urls, to a csv file. The problem I have is that I keep getting error messages when trying to export ...
2
votes
2answers
197 views

Hook for URL request

I would like to make XML files downloadable, instead of allowing the browser to displaying them inline. I know I can use the Content-Disposition: attachment HTTP header (of course, better solutions ...
2
votes
2answers
577 views

How to stop loading multiple copies of jquery

My wordpress header.php and function.php is given below.please help me to modify my php code to stop problems due to loading jquery multiple times. My plugins and themes are loading jquery multiple ...
2
votes
2answers
409 views

What code do you use to generate the text to go into the HTML title tag?

The question title says it all. Myself I just stick with the default code from one of the packaged templates that comes with WordPress out of the box: <title><?php /* * Print the ...
2
votes
1answer
235 views

Strip HTML comments from plugins in header/footer

Would anyone know a function or how to remove <!-- plugin inserted stuff--> from the header and footer so that they won't be visible when viewing source?
2
votes
2answers
7k views

Where is get_header('shop') file in Woocommerce templates

I need to modify the get_header('shop') file in Woocommerce but don't know where it's located, if someone knows please help me out - thanks!
2
votes
1answer
295 views

AJAX issue - Uncaught SyntaxError when processing Zip File

I'm creating an application that will allow a user to fill out a form and then have a customized zip file downloaded for them upon submit. I'm utilizing AJAX to accomplish this task. ...
2
votes
2answers
1k views

Call to undefined function get_header() in index.php

I am trying to create a theme. I created a header.php file and call this file in index.php using <?php get_header();?> When I try to run my index.php file it shows this error: Call to ...
2
votes
5answers
2k views

Some Themes do not have a header.php and footer.php how are they doing it?

Some themes that I have seen such as the (famous) thesis or even a few other not so famous themes have just an index.php (which has nothing in it), functions.php (call's their framework) and a ...
2
votes
1answer
7k views

Auto-refresh page every minute?

How do I make a WP page (w/ dynamic content) auto-refresh every minute? With PHP, I'd use a "Refresh:" header, and in HTML I could use a HTTP-EQUIV tag or something. However, WP generates headers ...
2
votes
1answer
368 views

Why is there a link tag with rel “profile” pointing to gmpg.org?

I found this <link rel="profile" href="http://gmpg.org/xfn/11"> in header.php file of WordPress theme. What will happen if I don't use this? What will happen if I use this ?
2
votes
1answer
427 views

Mysterious HTTP 404 header in my own scripts

I have a WordPress 3.5.1 + nginx configuration. Its nginx configuration is this: server { root /mysite/public_html; server_name wp.mysite; location / { try_files $uri $uri/ ...
2
votes
1answer
111 views

What is the Wordpress Pinecone sitting on top of? [closed]

Does anybody know where wordpress gets their banner images? Perhaps we could find the original photo? I'm curious just what exactly this pine cone is sitting on top of.
2
votes
1answer
219 views

Custom Post Type Events Archive Grouped By Month

I'm currently trying to get my events listing code to print out headers by Month. So basically this: October event event September event event etc... Right now it just keeps echoing ...
2
votes
0answers
136 views

Additional Option on Custom Header admin

I would like to extend the Custom Header class to include an animation feature for the header graphics. Essentially, I'd like to add another possible value for the radio button for randomization. The ...
1
vote
2answers
161 views

What is the advantage of using header-catname.php over is_category('catname');?

Let's say I have a category named as catname (the slug would be catname). I want the header styled differently when visitors open the category catname. The article on Ghacks explains how to create a ...
1
vote
2answers
488 views

Template Hierarchy for get_header()

I'm considering having different headers depending on the area of the site. So thought it might be possible to tap into the template hierarchy (or at the very least, re-use some of the code) and ...
1
vote
1answer
1k views

Headers already sent - Wordpress core

I'm getting an error on my site regarding "headers already sent": Warning: Cannot modify header information - headers already sent by (output started at ........./wp-admin/menu-header.php:161) in ...
1
vote
5answers
4k views

How to load a jQuery script last?

How to get this to load last? <script type="text/javascript"> jQuery(document).ready(function(){ jQuery("div.domTip_tipBody").mouseover(function(){ jQuery("#yyy ...
1
vote
2answers
2k views

custom headers for static home page and posts page

have a site w/a static home page and a posts page and then a number of other static pages - i set up a custom header for the home page and then another all other pages like this in the header ...
1
vote
6answers
2k 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 ...
1
vote
3answers
6k views

Can't get a JSON object in response to an ajax request with wp_ajax

I have a problem with WordPress and ajax. This is my javascript part (I trimmed it a bit): var posts = $.ajax({ type: 'POST', url: ajaxurl, async: false, dataType: 'json', data: ...
1
vote
2answers
435 views

Programmatically log in a wordpress user

I am trying to programmatically log in a wordpress user, using the following function for that. public function auto_login( $user ) { $username = $user; if ( ...
1
vote
3answers
2k views

Remove sticky behavior from top navigation on twenty fourteen theme?

In wordpress theme twentyfourteen, I am wondering how to remove the sticky behavior of the top navigation with a 100% width header background image like this site? I would love to have a top image ...
1
vote
1answer
84 views

if/else on custom query gives 200 OK when condition not met?

What? I am modifying my theme to show comments of a post on a separate page. How? Mostly based on this answer but with improved checks and code. So this is what my page-comments.php (kinda) looks ...
1
vote
1answer
1k views

wp_head() - list hooked actions with priorities?

I'd like to add something to wp_head() but I'm aiming precise location (like after style.css but before rtl.css and before my other custom script). I'm wondering if it's possible to list everything ...
1
vote
5answers
1k views

How to rotate the header image per day?

I'd like to have my header banner change every day, chosen (e.g. randomly) from a list/folder of images. So far I only found plugins that select a random banner per post or per page view, neither is ...
1
vote
1answer
144 views

Proper way to pass credentials in a custom login form to avoid “headers already sent”

I'm working on a custom login page plugin. I'm trying to figure out how to log the user in without creating "headers already sent" errors. I was calling wp_signon directly after the user clicked ...
1
vote
1answer
304 views

Echo URL of large version of Featured Image

I use this plugin to echo the URL of a post's featured image in the header: <?php /** Plugin Name: Post Thumbnail FB header */ function fb_header() { // Not on a single page or post? Stop ...
1
vote
2answers
768 views

Indenting (tabbing) WP_head

Right now all the stuff that gets included in wp_head are left justified all the way in the code view. Whereas all my other code that is around the wp_head is indented (tabbed) two times. Is it ...
1
vote
1answer
1k views

Add social icons in a theme through custom admin menu

Is it possible to make a theme with an option of configuring social icons with links through the custom header control panel? I googled it and found nothing that could help me, any help on that topic ...
1
vote
1answer
490 views

How to remove the header from all pages except home?

I have a Template Monster WP theme that I need to remove the headers from all pages except home. I have read several posts on this, but my code is a bit different. Can someone please help me? The ...
1
vote
1answer
43 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 ...
1
vote
1answer
340 views

How to set twenty fourteen header image at 100% width?

if function wpse_custom_header_setup() { add_theme_support( 'custom-header', apply_filters( 'wpse_header_args', array( 'width' => 1460, 'height' => ...