John Blackbourn – @johnbillion

Member Since: December 7th, 2005
Location: Tonbridge, UK; and Torino, Italy
Website: johnblackbourn.com
GitHub: johnbillion
Employer: Human Made Ltd
Find me on:

Bio

I’m one of the team of WordPress core developers. I was the release lead for WordPress 4.1 and 4.9.1. I work as a Principal Web Engineer at Human Made.

Previously I’ve worked at Code For The People and WordPress.com VIP.

Contributions Sponsored

John Blackbourn contributes 4 hours per week to the following teams: CLI, Core, Documentation.

Contribution History

Accessibility Contributor
bbPress Contributor
BuddyPress Contributor
Core Contributor
Core Team
Documentation Contributor
Meetup Organizer
Meta Contributor
Plugin Developer
Translation Contributor
WordCamp Organizer
WordCamp Speaker

Activity
Plugins
Favorites
Translations

Posted a reply to Plugin Conflict with Easy Testimonials: Invalid header error, on the site WordPress.org Forums:
Looks like you have the wrong forum. This error is coming from the easy-testimonials plugin.

2 days ago
Posted a reply to Compatibility with PHP 5.5, on the site WordPress.org Forums:
Thanks for the report. Yes this is a false positive. If you open the file…

2 days ago
Closed ticket #50617, in Core Trac:
REST API: Add modified_before and modified_after to WP_REST_Request ...

3 days ago
Committed [50024] to Core Trac:
REST API: Introduce `modified_before` and `modified_after` query ...

3 days ago
Posted a reply to Slow Query, on the site WordPress.org Forums:
Thanks for the update.

4 days ago
Posted a reply to [NSFW] Conflict with the ultimate member plugin, on the site WordPress.org Forums:
Please report this to the Ultimate Member plugin. Thanks!

4 days ago
Posted a reply to Authentication cookies, on the site WordPress.org Forums:
The cookies that User Switching uses behave the same way as the standard authentication cookies…

4 days ago
Posted a reply to Query Monitor + PHP 8 breaks WP, on the site WordPress.org Forums:
Thanks for letting me know!

5 days ago
Closed ticket #52336, in Core Trac:
It is not possible to search for the name of the media file

5 days ago
Reopened ticket #47577, in Core Trac:
Detect HTTPS support and provide guidance

6 days ago
Posted a reply to unable to save custom event, on the site WordPress.org Forums:
Are you able to provide some more information please? I've been testing this locally and…

1 week ago
Posted a reply to unable to save custom event, on the site WordPress.org Forums:
Thanks for the messages. I'm looking into this.

1 week ago
Posted a reply to Query Monitor + PHP 8 breaks WP, on the site WordPress.org Forums:
Can you ask your host for access? Or ask them to send you the most…

1 week ago
Posted a reply to Query Monitor + PHP 8 breaks WP, on the site WordPress.org Forums:
Anything in your server's error log?

1 week ago
Posted a reply to Query Monitor + PHP 8 breaks WP, on the site WordPress.org Forums:
Can you check your PHP error log for any fatal errors and let me know…

1 week ago
Posted a reply to error 404 for translation, on the site WordPress.org Forums:
Thanks for the report. This isn't anything specific to Query Monitor, if you install another…

1 week ago
Posted a reply to Missing changelog, on the site WordPress.org Forums:
Yeah I broke something in my deployment script. You can see the changelog here: https://github.com/johnbillion/query-monitor/releases

1 week ago
Committed [2460021] to Plugins Trac:
Update to version 3.6.7 from GitHub

1 week ago
Posted a reply to wp_split_shared_term_batch, on the site WordPress.org Forums:
This sounds like there might be an issue on your site where the term splitting…

1 week ago
Posted a reply to Clear log / query, on the site WordPress.org Forums:
The short answer is no. The long answer is sort of, maybe, depending on what…

2 weeks ago
Closed ticket #24266, in Core Trac:
update_post_meta doesn't change post modified date

2 weeks ago
Committed [2457098] to Plugins Trac:
Updating readme/assets from GitHub

2 weeks ago
Committed [2457034] to Plugins Trac:
Updating readme/assets from GitHub

2 weeks ago
Committed [2457027] to Plugins Trac:
Updating readme/assets from GitHub

2 weeks ago
Closed ticket #52298, in Core Trac:
Using ID as type string instead of int

2 weeks ago
Closed ticket #27399, in Core Trac:
Filter the HTML output of wp_get_attachment_image

2 weeks ago
Posted a reply to ETA on PHP 8 Fix?, on the site WordPress.org Forums:
Done.

2 weeks ago
Committed [2455920] to Plugins Trac:
Update to version 3.6.6 from GitHub

2 weeks ago
Committed [2455905] to Plugins Trac:
Updating readme/assets from GitHub

2 weeks ago
Committed [2455895] to Plugins Trac:
Updating readme/assets from GitHub

2 weeks ago
Posted a reply to User switching not woeking for whol, on the site WordPress.org Forums:
Can you let me know how you're redirecting the wholesaler when they log in? Which…

2 weeks ago
Posted a reply to ETA on PHP 8 Fix?, on the site WordPress.org Forums:
Sure, I'll add this to my todo list to get done tomorrow.

2 weeks ago
Posted a reply to unable to save custom event, on the site WordPress.org Forums:
Thanks for the reports, I'll look into this.

2 weeks ago
Created a new ticket, #5572, in Meta Trac:
Plugin FAQ anchor links get broken when used in a forum post

2 weeks ago
Posted a reply to Tracking user switching, on the site WordPress.org Forums:
Oh they're also in the FAQ: https://wordpress.org/plugins/user-switching/#%0Aare%20any%20plugin%20actions%20called%20when%20a%20user%20switches%20account%3F%0A

2 weeks ago
Posted a reply to Tracking user switching, on the site WordPress.org Forums:
There are actions in the plugin for this, have a look for do_action() instead of…

2 weeks ago
Committed [49955] to Core Trac:
REST API: Corrections and improvements to docblocks for REST API ...

3 weeks ago
Reopened ticket #52238, in Core Trac:
Missing option to change multiple users to "No role for this site"

3 weeks ago
Created a new ticket, #52265, in Core Trac:
Exclude Twenty Twenty from .gitignore

3 weeks ago
Posted a reply to Unable to pay for order after switching, on the site WordPress.org Forums:
In that case your best bet is to spend some time setting up a test…

3 weeks ago
Posted a reply to User switching not woeking for whol, on the site WordPress.org Forums:
Right, but what happens when a wholesaler logs in manually with a username and password?…

3 weeks ago
Posted a reply to Unable to pay for order after switching, on the site WordPress.org Forums:
Does the same problem occur on your test site? If not, I would look into…

3 weeks ago
Posted a reply to Time stamp for debugging, on the site WordPress.org Forums:
Unfortunately the start time for every query isn't exposed by QM, however it does get…

3 weeks ago
Posted a reply to PHP 8 warning, on the site WordPress.org Forums:
Thanks, see https://wordpress.org/support/topic/php-warning-in-php8/

3 weeks ago
Posted a reply to Activate logging, on the site WordPress.org Forums:
Can you tell me more about what you're trying to do?

3 weeks ago
Posted a reply to User switching not woeking for whol, on the site WordPress.org Forums:
What happens when the wholesaler logs in manually? Are they redirected to the dashboard?

3 weeks ago
Posted a reply to Edit of phpcron event is not saved, on the site WordPress.org Forums:
Does it work if you try again? ie. is the problem persistent or is it…

4 weeks ago
Posted a reply to Probably-not-important PHP Notice, on the site WordPress.org Forums:
Thanks for the report! I'll take a look.

4 weeks ago
Posted a reply to Missing Event Type, on the site WordPress.org Forums:
Nope the feature is still there, I've just moved it to a single "Add New"…

4 weeks ago
Posted a reply to Plugin update for WordPress version 5.6.x compatibility ?, on the site WordPress.org Forums:
WP Crontrol version 1.9 was just released. It's fully tested and working with WP 5.6.

4 weeks ago