John Blackbourn – @johnbillion

Member Since: December 7th, 2005
Location: Tonbridge, UK; and Torino, Italy
Website: johnblackbourn.com
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 Error trying to update pages and posts, on the site WordPress.org Forums:
Sorry but this isn't something I can help you with. You'll need to try deactivating…

13 hours ago
Posted a reply to Could you schedule WordPress automatic updates with this plugin?, on the site WordPress.org Forums:
Yep you can edit the existing auto update cron events and change the time at…

19 hours ago
Posted a reply to Recent Issue, on the site WordPress.org Forums:
Thanks for the message. The best thing to do is to deactivate your other plugins…

1 day ago
Posted a reply to Notice A non well formed numeric value encountered, on the site WordPress.org Forums:
Thanks for the report, I'll take a look.

2 days ago
Posted a reply to Cron jobs dissapear automatically, on the site WordPress.org Forums:
Thanks for the report. This doesn't sound like anything specific to WP Crontrol. Are you…

6 days ago
Posted a reply to Idea -> Warning notice on ALL admin pages, on the site WordPress.org Forums:
Good idea, thanks! I've opened an issue for this here: https://github.com/johnbillion/wp-crontrol/issues/59

1 week ago
Posted a reply to Undefined index: found_formatted, on the site WordPress.org Forums:
Thanks. A few other people have reported this, it seems to come from plugins which…

1 week ago
Posted a reply to CRONS Run but do not Show in Plugin, on the site WordPress.org Forums:
These are access logs, they don't necessarily mean that a WordPress cron event runs every…

2 weeks ago
Posted a reply to CRONS Run but do not Show in Plugin, on the site WordPress.org Forums:
Which cron events are they? What are you using to see them running?

2 weeks ago
Posted a reply to Fatal error stack not showing, on the site WordPress.org Forums:
Yes but what's the exact fatal error message in your case? QM should be able…

3 weeks ago
Posted a reply to Fatal error stack not showing, on the site WordPress.org Forums:
Thanks for the report. What's the fatal error message please?

3 weeks ago
Wrote a comment on the post Experiment: Coordinating Sponsored Contributor Teams, on the site Team Updates:
I remember last year looking through the 5ftf lists and seeing dozens, if not hundreds,…

3 weeks ago
Created a new ticket, #52884, in Core Trac:
Sorting users by registered date assumes users were registered in order

3 weeks ago
Posted a reply to isiue with wordfance + quary monitor, on the site WordPress.org Forums:
Thanks for the report. This is a known issue. Take a look at this thread…

4 weeks ago
Wrote a comment on the post Proposal: Native TypeScript support in Gutenberg, on the site Make WordPress Core:
Yes please! There is certainly a learning curve with TypeScript but the payoff is definitely…

4 weeks ago
Posted a reply to other “user” plugins – Expire Users, on the site WordPress.org Forums:
Thanks, can you report this to the Expire Users plugin please?

4 weeks ago
Posted a reply to Woocommerce checkout invoice address is not switching, on the site WordPress.org Forums:
Which version of WooCommerce are you using?

4 weeks ago
Posted a reply to ESI causes problems with Query Monitor, on the site WordPress.org Forums:
Does this plugin call fastcgi_finish_request? If so, that'll be what's breaking QM and it'll break…

1 month ago
Created a new ticket, #52813, in Core Trac:
Pass the scheme to all the `*_url` filters

1 month ago
Closed ticket #51734, in Core Trac:
Run core unit tests from src again, again

1 month ago
Posted a reply to access query monitor on post-new.php, on the site WordPress.org Forums:
You can also use the settings menu in Gutenberg (the cog icon) and then disable…

1 month ago
Posted a reply to Query Monitor Context Menu on Products via Jetpack, on the site WordPress.org Forums:
Thanks for the report. Can you confirm that when you publish the post and view…

1 month ago
Posted a reply to Deactivating the plugins breaks the pages, on the site WordPress.org Forums:
No this is not normal. What are the errors?

1 month ago
Posted a reply to Logging results to file, on the site WordPress.org Forums:
The short answer unfortunately is no. This is something I've been working toward but there's…

1 month ago
Posted a reply to switch_users meta doesn’t exist – can only use as Admin, on the site WordPress.org Forums:
Does URE give you the option to add a new capability to a role by…

1 month ago
Posted a reply to Can’t see details on front-end, on the site WordPress.org Forums:
* Any JavaScript errors in the browser console? * If you view the source of…

1 month ago
Committed [50505] to Core Trac:
Docs: Add examples of possible names for various hooks whose name ...

1 month ago
Reopened ticket #51734, in Core Trac:
Run core unit tests from src again, again

1 month ago
Committed [50501] to Core Trac:
Build/Test Tools: Ensure the ...

1 month ago
Posted a reply to Maximum call stack size exceeded, on the site WordPress.org Forums:
Sorry but there's not enough information here for me to be able to help you.…

1 month ago
Posted a reply to Different WooCommerce order status, on the site WordPress.org Forums:
Yeah there are some helpers in User Switching for this. You'll need somebody to write…

1 month ago
Committed [2486237] to Plugins Trac:
Updating readme/assets from GitHub

1 month ago
Created a new ticket, #52708, in Core Trac:
Loopback requestss do not work on the local development environment

1 month ago
Wrote a comment on the post Introducing script attributes related functions in WordPress 5.7, on the site Make WordPress Core:
Thanks, fixed.

1 month ago
Posted a reply to Ne fonctionne pas correctement, on the site WordPress.org Forums:
Why didn't you post a thread in the support forum to ask for help before…

1 month ago
Posted a reply to Edit of phpcron event is not saved, on the site WordPress.org Forums:
I added some info to the wiki about this problem. There's not much to add…

1 month ago
Posted a reply to Query Monitor causes Wordfence scan failure, on the site WordPress.org Forums:
Unfortunately there's not really anything that can be done about this. The underlying problem is…

1 month ago
Closed ticket #40536, in Core Trac:
Imagick tests cannot be tested on Travis

1 month ago
Committed [50464] to Core Trac:
Build/Test Tools: PHPUnit test improvements: * Switch back to running ...

1 month ago
Posted a reply to change switch url, on the site WordPress.org Forums:
Nope sorry, that's part of the security mechanism. If you need to fetch the URL…

2 months ago
Posted a reply to No option to “Add PHP Cron Event”, on the site WordPress.org Forums:
Click the “Add New” button on the Cron Events screen, and from there you can…

2 months ago
Posted a reply to error with mailpoet, on the site WordPress.org Forums:
Thanks. Which version of WooCommerce are you using please?

2 months ago
Posted a reply to Could developer help me to write a function turn off/on plugins?, on the site WordPress.org Forums:
Sorry but this is beyond the level of support I can provide. I hope you…

2 months ago
Committed [2478565] to Plugins Trac:
Update to version 1.10.0 from GitHub

2 months ago
Created a new ticket, #5631, in Meta Trac:
Missing bottom padding in the callout block types

2 months ago
Wrote a comment on the post Introducing new Post Parent related functions in WordPress 5.7, on the site Make WordPress Core:
Update: These functions were originally introduced as get_parent_post() and has_parent_post() but have since been renamed…

2 months ago
Wrote a comment on the post Introducing new Post Parent related functions in WordPress 5.7, on the site Make WordPress Core:
Thanks Mike, the example code has been updated.

2 months ago
Posted a reply to Can’t switch from shop manager to shop staff, on the site WordPress.org Forums:
Yes, please take a look at the FAQs for how to grant this ability to…

2 months ago
Posted a reply to Not working properly, on the site WordPress.org Forums:
This is most likely a problem caused by another plugin on your site such as…

2 months ago
Posted a reply to Using PHP or JSON encoded array to pull in specific email address for template, on the site WordPress.org Forums:
Sorry but this is beyond the level of support I can provide. I hope you…

2 months ago