Basic techniques on debugging WordPress that can assist you on first hand.

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728 views

the_content() returning null in one category only, even though there is content

A friend's heavily customized blog has a category with a specific categoryname-single.php file to display posts. Apparently for no special reason, since yesterday, the_content() is not returning any ...
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1answer
30 views

How do I acquire all the meta-information for a particular page I am on?

I am trying to customize behavior for different displays of pages; I know I can use the Template Hierarchy and Conditional Tags to accomplish this. In the process of debugging, though, I'd like to be ...
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2k views

Problem installing plugin: unexpected T_STRING, expecting T_FUNCTION

i am trying to install plugin tumblrize and got the error Parse error: syntax error, unexpected T_STRING, expecting T_FUNCTION in ...
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1answer
27 views

add button to specific post

This code is designed to add a button to specific posts using the get_post_meta function. How do I alter the get_post_meta function to display this button on a specific post? I have already tried ...
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2answers
80 views

How to utilize WP-CLI from inside WordPress, not SSH?

I'm looking for a way to test out some WP-CLI commands but from the Debug Bar Console where I normally test PHP. For cases when I don't want to switch windows to SSH, this might be a way to ...
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1answer
79 views

How to debug vars inside function at functions.php file?

I have this function: function wpse_210493_apply_advertising_position( &$posts, $return = false ) { $ad_posts = array(); $content_posts = array_filter( $posts, function ( ...
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62 views

How to dump/log default values that are passed to hooks/filter functions?

Here's a quick example of I am trying to achieve: I am using this filter: add_filter('manage_edit-member_columns', 'set_custom_edit_member_columns'); function ...
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24 views

what are WP_DEBUG conditions?

i'm trying to debug my theme using below code to find out some errors,do i need to fix all errors or is it OK when i ignore some of them? error_reporting(E_ALL); ini_set('display_errors', 1); ...
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2k views

“Notice: Undefined variable: content” is showing [closed]

I am using this code if for showing related content form custom taxonomy. But it is showing "Notice: Undefined variable: content" Here is my code: <?php /* Plugin Name: Related Post */ ...
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1answer
183 views

Following/tracing page construction through theme PHP

What tools and methods will allow me to figure out how a page is being constructed by WP? I have a mix of plugins that are involved in the theme, and starting with the code I can't begin to figure ...
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1answer
62 views

How do I debug an error that a plugin is causing?

I'm having an issue debugging why the plugin I'm creating keeps displaying the error You need to upgrade your database as soon as possible.... The work I've done so far has been on a remote dev site, ...
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1answer
217 views

Undefined variable error in theme option after updating theme [closed]

I have built a theme.. Now i have updated the theme and my theme consist of two new fields in the theme option panel <input id="welcome_post_char" type="text" name="abc_options[welcome_post_char]" ...
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1answer
461 views

Debug output during filter execution doesn't work

I'm working on my first Wordpress plugin and am working on my first Custom Post Type. I'm looking to provide some debug output so I can see what kind of data I have to work with. I have the following ...
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1answer
536 views

Notice: Undefined index [closed]

Got this great contact us page to use on in my theme. It works great, but the problem is, in debug mode I get undefined index errors on the following line of code: $name = $_POST['name']; ...
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1answer
1k views

add_sub_menu page() to be replaced by add_theme_page()

While checking my theme with theme-check plugin, i found few errors which are listed below along with the line of codes where it displays those errors(REQUIRED:) to be fixed. REQUIRED: ...
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1answer
563 views

How to find out which function is causing a 404

So I am trying to upgrade a WordPress project and for one section I get the 404 instead of seeing a product page. I looked around and tried adding this to my functions.php add_action('wp_head', ...
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1answer
44 views

Best place to call xdebug helper functions?

Right now I place the following code wherever I expect something to go wrong. /** xdebug helper */ error_reporting(E_ERROR); ini_set("display_errors", 1); ini_set("html_errors", 1); ...
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1answer
228 views

Cannot Modify Header Information - While trying logging in

I am having the same issue as cited on: Cannot modify header information - headers already sent (Theme Specific : functions.php) Can you give me a help on that. I am using Optimize Press Theme This ...
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2answers
119 views

Wordpress + Buddpyress - troubleshooting server overloading

I have a Wordpress+Buddypress installation which is regularly going down - the number of HTTPD on the server and the server CPU load both peak suddenly and the server fails to recover. A restart of ...
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1answer
879 views

How can I understand what is the cause of WP death (white screen)?

I have some problems on a admin side: when i try to filter posts according to any category, or when I publish a post, I see a white screen of WP death... The content of debug.log is: [17-Jun-2012 ...
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1answer
1k views

Weird undefined index: id,std notices. How to fix it?

Ok I'm running my wordpress in debug mode. I'm getting lot of notices. This is my code. <?php //allows the theme to get info from the theme options page global $options; foreach ($options as ...
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1answer
514 views

Fix warning: Missing argument

i want to submit a theme to the wordpress.org. when i put the define('WP_DEBUG', true); in my wp-config.php. my theme showed some errors.but i don't know how to correct theme. Q1:Warning: Missing ...
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1answer
340 views

my blog crashes ie7?

hey guys, weird problem. My blog theme works fine in ie8, ie9 and all other major browsers... however ie7 doesn't even render it? in ie7 it seems like my blog even has serverside problems? any idea ...
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3answers
586 views

page template - undefined structure in source code

hey, i have the following page template for a sitemap. <?php /** * Template Name: Sitemap */ ?> <?php if (have_posts()) : while (have_posts()) : the_post(); ?> <div> ...
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2answers
172 views

Is there ANYTHING about this query that's incompatible with WordPress 2.9.2?

I've been puzzling over this one for two days. Still can't figure it out. I'm testing a theme release in multiple versions of WordPress using xampplite on localhost on a PC. I'm having a problem on ...
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2answers
76 views

Why is adoptStyles-css stylesheet link added to every page?

By looking at the source of any of the WordPress pages on my site, I can see there is this stylesheet link: <link rel='stylesheet' id='adoptStyles-css' ...
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27 views

Tracing which wordpress php script executes specific actions

Is there any way to trace which php script in wordpress executes a specific actions ? In my case I want to trace which php file in wordpress whether a plugin script , theme script or standard ...
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1answer
33 views

How to debug theme (Theme is causing pages to have no style or HTML <head> section)

I have a WordPress theme given to me by a client, so not familiar with it at all. Activating the Twenty Sixteen theme resolves the problem, so it's not a plugin but definitely the client's theme. ...
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18 views

Logging error messages with error_log() and WP_DEBUG_LOG

If I use error_log( 'foo' ) in WordPress and WP_DEBUG_LOG is set to false, where does "foo" get logged to? Note that with WP_DEBUG_LOG set to true, "foo" is logged in wp-content/debug.log.
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15 views

Unnessary character on post after restore

Recently i restored the wordpress post . Now I am getting so much problem with it. In post there are unknown characters like  like you can see in There are othermany such character. I ...
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1answer
136 views

Contact Form 7 before_send_mail var_dump

I've been adding some custom functionality to the hooks that contact form 7 provides and I'm just trying to post the data to an external source now. When I try to var_dump the contents of the ...
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1answer
21 views

Debugging conundrum with a problem fixed by enabling WP_DEBUG

I've got a site that has a plugin that causes problems with the admin-ajax.php file to have 500 internal errors when its turned on. The plugin causes this issue in the ajax file even on pages of the ...
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0answers
32 views

Can't show debug even after modifying wp-config

I added this to my wp-config file: /** * For developers: WordPress debugging mode. * * Change this to true to enable the display of notices during development. * It is strongly recommended that ...
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1answer
49 views

Which language files are loaded?

Is there a way to print a list of the loaded language files for debugging reasons?
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42 views

Wordpress not compatible with ios9 keyboard on older ipad

I have tested latest version of wordpress with ios9 : with iphone6 it's ok but on older version like ipad mini 2 typing is extremely sluggish not only on newpost but on search field. Speed is normal ...
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1answer
9 views

Comment form Dissappeared in posts

I suddenly noticed that comments and comment form never shows up in my website's posts: Comments in page shows up. but in post there is no comment. In single.php I have the <?php ...
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2answers
47 views

how to error_log(wp_login_url())

I am trying to confirm if a filter I have applied has changed the wp_login_url to the correct address. I just want to print out the result of wp_login_url somewhere I can see it. if ( has_shortcode( ...
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1answer
60 views

I'm hit with: undefined constant register_sidebar. Once in debug mode? [closed]

I'm attempting to test my theme and I switched my config to debug true and I'm now hit with "Notice: Use of undefined constant register_sidebar - assumed 'register_sidebar'" I'm struggling to fix and ...
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1answer
14 views

How do I issue a warning in a wordpress plugin?

I'm trying to debugging a plug in that's misbehaving. I don't have a good setup for debugging and developing wordpress, so I just want to output the values of some variables to the rendered page. Is ...
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1answer
104 views

Debugging WordPress with xDebug

Until now I was using a local WordPress project and I was able to define the xDebugger in the php.ini file, it's very useful and helpful. But now I'm connected to a remote server and I only have the ...
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35 views

How to find the function which is outputting Array

I'm calling a plugin (Event Rocket) from a template and the output is mostly as expected but seldom the only thing that is displayed is "Array". I have consulted the plugin's makers and they have no ...
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0answers
102 views

My website is not visible to visitors?

I don't know what happened, but my website is not visible to visitors, is only visible to me if am logged in as admin. I developed a website on a page, I could see it because I was logged in, however ...
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0answers
28 views

Formatting wordpress debug messages

On my local PC (win 8 & IIS) when I get a wordpress debug message I get a nicely formatted table at the top of the page with a full stack trace. When I enable debugging on my linux hosting I just ...
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1answer
27 views

Method 'post_title' not found in class.

I'm running some code through phpStorm and am getting an error: Method 'post_title' not found in class. at this line: echo $post->post_title(); Is that phpStorm getting things wrong or am I ...
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0answers
723 views

How can I debug the TTFB in WP?

I'm developing a WP theme, based on _s default theme with WP 4.1.1. I keep getting a TTFB(time to first byte) of 22s, consistently both on the front and back of the site, while on localhost. Here's a ...
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1answer
20 views

Plugins effecting layout & login

I've been working on this issue by myself for a week, and I feel like I'm at my wit's end. Need some advice on what to try next. The issue is that my site has the white screen of death (no login) ...
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1answer
380 views

wp_enqueue_script was called incorrectly… i want to work with debug on

i know that this error is just a notice: notice: wp_enqueue_script was called incorrectly. scripts and styles should not be registered or enqueued until the wp_enqueue_scripts, admin_enqueue_scripts, ...
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1answer
223 views

wp-includes/comment-template.php:26 - Trying to get property of non-object

I get this notice when debugging my new site. Does anybody know what this means? It doesn't break the site but it's just a warning when I switch debug mode on and I would like to solve this issue. ...
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0answers
41 views

How to find which plugin crashes

I use wordpress version 3.8.3 and as many times as i tried to update wp the site crashes. Probably it's due to plugins. Am trying to find a way to learn which plugin causes this confliction but i ...
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1answer
27 views

How can I turn off WP_DEBUG_LOG messages coming from a specific plugin or theme?

This is a seemingly simple question... I was wondering if anyone knows how to turn off WP_DEBUG_LOG messages coming from a specific plugin or theme? This assumes define('WP_DEBUG_LOG', true); in ...