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 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…

48 mins ago
Closed ticket #52199, in Core Trac:
Query string is expecting a array but is receiving a string

1 day 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.

2 days 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"…

3 days 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.

3 days ago
Committed [2448211] to Plugins Trac:
Update to version 1.9.0 from GitHub

3 days ago
Posted a reply to Link in a new window, on the site WordPress.org Forums:
Thanks for the suggestion! I won't be changing this behaviour (for now at least) as…

4 days ago
Posted a reply to Query/Hours, on the site WordPress.org Forums:
Unfortunately this isn't something that Query Monitor can tell you. QM shows information for the…

6 days ago
Created a topic, Please read before posting a support thread, on the site WordPress.org Forums:
Thank you for using WP Crontrol. I hope you find it us…

6 days ago
Posted a reply to Is this plugin up to date?, on the site WordPress.org Forums:
There's no hard and fast rule of course, but I think a better metric is…

6 days ago
Posted a reply to Is this plugin up to date?, on the site WordPress.org Forums:
Yep the plugin works fine with the latest versions of both WordPress and PHP, I've…

6 days ago
Posted a reply to PHP Warning in PHP8, on the site WordPress.org Forums:
Thanks, this is already fixed in the development version. I'll do a release in three…

1 week ago
Closed ticket #48213, in Core Trac:
The XML-RPC endpoint should return a more appropriate HTTP status code ...

2 weeks ago
Committed [49862] to Core Trac:
XML-RPC: Emit an appropriate HTTP status code when an error is ...

2 weeks ago
Committed [49857] to Core Trac:
Build/Test Tools: Don't mark the `Tests_Cache::test_flush()` test as ...

2 weeks ago
Closed ticket #25214, in Core Trac:
Behaviour when deleting menu items with sub-menus

2 weeks ago
Closed ticket #51493, in Core Trac:
Type error in wp_xmlrpc_server::_prepare_taxonomy()

2 weeks ago
Committed [49856] to Core Trac:
XML-RPC: Fix a type error when requesting the `menu` field of a ...

2 weeks ago
Created a new ticket, #52142, in Core Trac:
Declare `sort` and `args` properties of WP_Taxonomy

2 weeks ago
Committed [49846] to Core Trac:
Query: Correct some coding standards after [49843]. See #44183

2 weeks ago
Closed ticket #16849, in Core Trac:
Add a filter for $overrides in wp_handle_upload()

2 weeks ago
Posted a reply to PHP Error, on the site WordPress.org Forums:
@nick7766 @freshpromo Thanks for the info. I've been testing various plugins in your lists and…

2 weeks ago
Posted a reply to Uncaught DOMException: The quota has been exceeded., on the site WordPress.org Forums:
Is it persistent? This doesn't seem like anything specific to Query Monitor. You should contact…

2 weeks ago
Closed ticket #5549, in Meta Trac:
Use a fixed width font for the ticket information in Trac emails

2 weeks ago
Created a new ticket, #5549, in Meta Trac:
Use a fixed width font for the ticket information in Trac emails

3 weeks ago
Posted a reply to PHP 8.0.x – Support for the latest and most updated official stable version ?, on the site WordPress.org Forums:
Dude, what on earth are you going on about? I literally answered your question in…

3 weeks ago
Posted a reply to PHP 8.0.x – Support for the latest and most updated official stable version ?, on the site WordPress.org Forums:
Your response does not at all satisfy me, either.

3 weeks ago
Posted a reply to PHP 8.0.x – Support for the latest and most updated official stable version ?, on the site WordPress.org Forums:
It works fine, I've just not had a need to update the plugin for a…

3 weeks ago
Posted a reply to 403 error, on the site WordPress.org Forums:
Sorry but I'm unable to help fix issues on your site that WP Crontrol informs…

4 weeks ago
Posted a reply to How does Query Monitor determine max_execution_time is Overridden at runtime, on the site WordPress.org Forums:
Thanks for the update! It's unfortunate that this isn't easier to debug, but at least…

4 weeks ago
Posted a reply to Disable Query Monitor output from CSV export, on the site WordPress.org Forums:
It just occurred to me that there is in fact a filter in QM for…

4 weeks ago
Posted a reply to The DISABLE_WP_CRON constant is set to true. WP-Cron spawning is disabled., on the site WordPress.org Forums:
Sorry but I'm unable to help with problems that this plugin informs you about. It…

4 weeks ago
Posted a reply to display switch to link as html, on the site WordPress.org Forums:
That function returns the URL, you need to place it inside an <a href="...">...</a> tag.…

4 weeks ago
Posted a reply to How does Query Monitor determine max_execution_time is Overridden at runtime, on the site WordPress.org Forums:
If you change that setting to another value, eg. 200, does it get reflected correctly…

4 weeks ago
Posted a reply to Prevent Switching to specific named roles, on the site WordPress.org Forums:
Those FAQ links don't seem to work. There's an FAQ called "Can the ability to…

4 weeks ago
Posted a reply to Prevent Switching to specific named roles, on the site WordPress.org Forums:
Yep, but you'll need to write the code that handles the exact condition you require.…

4 weeks ago
Posted a reply to How does Query Monitor determine max_execution_time is Overridden at runtime, on the site WordPress.org Forums:
For a bit more information, QM collects the "before" value as early as possible, which…

4 weeks ago
Posted a reply to How does Query Monitor determine max_execution_time is Overridden at runtime, on the site WordPress.org Forums:
This means that a plugin or theme on your site is overriding the value during…

4 weeks ago
Posted a reply to PHP Error, on the site WordPress.org Forums:
@freshpromo an error log and list of your active plugins would be very helpful, thanks!

1 month ago
Posted a reply to Conflict with All In One WP Security & Firewall, on the site WordPress.org Forums:
Sorry to hear this. There's no reason User Switching shouldn't work with AIOWPS, it works…

1 month ago
Posted a reply to CRON jobs with an Action of “!NONE”, on the site WordPress.org Forums:
Yes that's correct. I added some more FAQs about this last week but they're not…

1 month ago
Posted a reply to Failed to the execute the cron event, on the site WordPress.org Forums:
Sorry you're having a problem but this isn't something I can help with as it's…

1 month ago
Posted a reply to PHP Error, on the site WordPress.org Forums:
Thanks for the report. This error has been reported a few times but I do…

1 month ago
Posted a reply to open_basedir warning, on the site WordPress.org Forums:
You'll need to contact your web host about this.

1 month ago
Posted a reply to Debug SiteMap Generating Queries?, on the site WordPress.org Forums:
Unfortunately no, as QM currently relies on being able to output its HTML panel at…

1 month ago
Committed [2424892] to Plugins Trac:
Updating readme/assets from GitHub

1 month ago
Posted a reply to How can I create a log of all cron jobs, on the site WordPress.org Forums:
This isn't currently possible in WP Crontrol but I am working on it. No ETA…

1 month ago
Posted a reply to How to add the “switch back” link on the LoginPress form, on the site WordPress.org Forums:
User Switching does provide this. If you deactivate LoginPress you'll see it.

1 month ago
Posted a reply to Switching back to admin retains user details on main admin account only, on the site WordPress.org Forums:
Nope sorry, sounds like your caching is in a muddle unfortunately. Try deactivating anything related…

2 months ago
Posted a reply to Do “queries” slow down websites’ loading times?, on the site WordPress.org Forums:
Yes that's correct. Everything that QM shows you is a process which happens during the…

2 months ago