John Blackbourn – @johnbillion

Member Since: December 7th, 2005
Location: Tonbridge, UK; and Torino, Italy
Website: johnblackbourn.com
GitHub: johnbillion
Job Title: Senior WordPress Engineer
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 an engineer at Human Made.

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

Contributions Sponsored

John Blackbourn contributes 8 hours per week to the following teams: CLI, Core, Documentation.

Contribution History

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

Activity
Plugins
Favorites
Translations

Posted a reply to USE ON MULTI-NETWORK INSTALL, on the site WordPress.org Forums:
I don't know about being in the ditch :D but there's nothing fundamental in User…

20 hours ago
Posted a reply to USE ON MULTI-NETWORK INSTALL, on the site WordPress.org Forums:
Thanks for the message. Why is activating User Switching on one network having an affect…

2 days ago
Posted a reply to Won’t let me execute any cron jobs?, on the site WordPress.org Forums:
I've just released a new version which fixes the ability to immediately run an event…

4 days ago
Posted a reply to Method for enabling Query Monitor for only specific users, on the site WordPress.org Forums:
I just tested this with the Members plugin and it works as expected for granting…

4 days ago
Committed [2291788] to Plugins Trac:
Update to version 1.8.2 from GitHub

4 days ago
Posted a reply to Deactivating Plugin After Setting Cron Job?, on the site WordPress.org Forums:
If your requirements are straight forward, you can use WP-CLI to manage cron events too…

4 days ago
Posted a reply to Deleting Cron, on the site WordPress.org Forums:
I forgot to mention that this was fixed in 1.8.1. Thanks for the report.

4 days ago
Created a new ticket, #50010, in Core Trac:
wp-includes/blocks shouldn't be excluded from coding standards

4 days ago
Created a new ticket, #50009, in Core Trac:
class-wp-block-parser.php shouldn't be excluded from coding standards

4 days ago
Posted a reply to Method for enabling Query Monitor for only specific users, on the site WordPress.org Forums:
Yeah you can grant or deny the view_query_monitor capability to individual roles or users. You…

4 days ago
Posted a reply to Identifying Unnecessary Cron Events, on the site WordPress.org Forums:
Events which have None in the Actions column can usually be safely deleted, they're often…

5 days ago
Posted a reply to Deactivating Plugin After Setting Cron Job?, on the site WordPress.org Forums:
Yes, as long as you've used one of the default schedules (such as daily). If…

5 days ago
Posted a reply to Won’t let me execute any cron jobs?, on the site WordPress.org Forums:
Thanks for the report. This seems to be happening when trying to execute a cron…

6 days ago
Posted a reply to BackupBuddy Won’t Backup and Won’t Update, on the site WordPress.org Forums:
This is not the BackupBuddy forum, this is the User Switching Forum

1 week ago
Posted a reply to Get data programmatically, on the site WordPress.org Forums:
Query Monitor doesn't store any data persistently, so connecting it to an external services isn't…

1 week ago
Wrote a comment on the post Proposal: GitHub Theme Review, on the site Theme Review Team:
Also happy to help with anything GitHub and Actions related.

1 week ago
Committed [2288686] to Plugins Trac:
Updating readme/assets from GitHub

1 week ago
Committed [2288685] to Plugins Trac:
Remove Compsoer files.

1 week ago
Committed [2288682] to Plugins Trac:
Updating readme/assets from GitHub

1 week ago
Posted a reply to Ecwid collecting my email address without permission, on the site WordPress.org Forums:
Thanks

1 week ago
Committed [2288491] to Plugins Trac:
Updating readme/assets from GitHub

1 week ago
Committed [2288489] to Plugins Trac:
Meta updates

1 week ago
Committed [2287904] to Plugins Trac:
Update to version 1.8.1 from GitHub

1 week ago
Created a new ticket, #5162, in Meta Trac:
Display a "welcome" message when a user hasn't submitted a patch or ...

1 week ago
Posted a reply to Add New Cron Job (ERROR), on the site WordPress.org Forums:
@kabeerhussain14 Does your code work if you add just 1 second to the time?

1 week ago
Posted a reply to Add New Cron Job (ERROR), on the site WordPress.org Forums:
Ah I've seen this problem before. I think scheduling a job for time() can be…

1 week ago
Posted a reply to Add New Cron Job (ERROR), on the site WordPress.org Forums:
Do you have an object cache plugin on your site? Can you try deactivating it…

1 week ago
Posted a reply to Add New Cron Job (ERROR), on the site WordPress.org Forums:
There could be an issue with the object cache on your site. * Can you…

1 week ago
Created a new ticket, #49961, in Core Trac:
Expose the reason for failures that occur within WP-Cron functions

1 week ago
Posted a reply to Add New Cron Job (ERROR), on the site WordPress.org Forums:
Unfortunately WordPress core doesn't expose the underlying reason for the failure when creating a cron…

1 week ago
Posted a reply to Deleting Cron, on the site WordPress.org Forums:
Found the problem, the bottom bulk actions menu isn't working, but the top one is.…

1 week ago
Posted a reply to Deleting Cron, on the site WordPress.org Forums:
Oh that's good to know thanks, I'll get that checked.

1 week ago
Posted a reply to Deleting Cron, on the site WordPress.org Forums:
Oh the orange bar can show up for events that have missed their next run…

1 week ago
Posted a reply to Deleting Cron, on the site WordPress.org Forums:
The orange bar is just a visual indicator for events without an action (should be…

1 week ago
Posted a reply to External object use error, on the site WordPress.org Forums:
You need to install a Redis plugin.

1 week ago
Posted a reply to Deleting Cron, on the site WordPress.org Forums:
This sounds like a caching issue on your site. Try deactivating any caching plugins you've…

1 week ago
Posted a reply to Error message about preview, on the site WordPress.org Forums:
Query Monitor is just telling you the problem. You'll need to deactivate your other plugins…

1 week ago
Posted a reply to BackupBuddy Won’t Backup and Won’t Update, on the site WordPress.org Forums:
Wrong forum :-)

1 week ago
Created a topic, Attribution, on the site WordPress.org Forums:
Hi. This plugin is clearly based on my User Switching…

1 week ago
Posted a reply to Attribution, on the site WordPress.org Forums:
This has been addressed, thank you.

1 week ago
Committed [2287078] to Plugins Trac:
Updating readme/assets from GitHub

1 week ago
Committed [2287039] to Plugins Trac:
Update to version 1.8.0 from GitHub

1 week ago
Committed [2286915] to Plugins Trac:
Screenshot

1 week ago
Posted a reply to Impact for non-admin hits, on the site WordPress.org Forums:
Yeah QM always collects data but doesn't do any processing of it unless the current…

2 weeks ago
Posted a reply to Error message comes up!, on the site WordPress.org Forums:
In that case can you try deactivating QM and see what the error says? Whatever…

2 weeks ago
Posted a reply to Error message comes up!, on the site WordPress.org Forums:
This is just QM re-throwing an exception that's occurred on your site (this isn't very…

2 weeks ago
Posted a reply to Question about PHP-Cron, on the site WordPress.org Forums:
You should use an absolute path for your file (eg by using ABSPATH or WP_CONTENT_DIR),…

2 weeks ago
Posted a reply to Toolbar query monitor not visible anymore, on the site WordPress.org Forums:
Also please let me know who you're hosted with.

2 weeks ago
Posted a reply to Toolbar query monitor not visible anymore, on the site WordPress.org Forums:
Can you all try deactivating your other plugins one by one to see if there's…

2 weeks ago
Posted a reply to Toolbar query monitor not visible anymore, on the site WordPress.org Forums:
Are you logged in as an administrator? Do you have any user role or capability…

2 weeks ago