John Blackbourn (@johnbillion) – WordPress user profile

Member Since: December 7th, 2005
Location: Norwich, 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 Where is the link to the report, on the site WordPress.org Forums:
It's usually the last menu item starting from the left hand side. Take a look…

19 hours ago
Posted a reply to Does not track certain Woocomerce hooks like woocommerce_order_status_completed, on the site WordPress.org Forums:
Does the hook fire before a redirect occurs to send the user to another page?…

4 days ago
Posted a reply to Missing the edit and delete options, on the site WordPress.org Forums:
Also I appreciate this isn't very clear, I need to do some work to make…

5 days ago
Posted a reply to Missing the edit and delete options, on the site WordPress.org Forums:
This happens when you don't have permission to create or edit PHP cron events. Did…

5 days ago
Posted a reply to PHP errors were triggered during an Ajax request., on the site WordPress.org Forums:
I've seen notices get generated if you're "watching" an expression in your code editor while…

2 weeks ago
Posted a reply to PHP errors were triggered during an Ajax request., on the site WordPress.org Forums:
These errors get logged to your browser console. Can you open the console and see…

2 weeks ago
Posted a reply to Use of mbstring.http_output is deprecated, on the site WordPress.org Forums:
You've already reported this here: https://wordpress.org/support/topic/unknown-use-of-mbstring-http_output-is-deprecated/

2 weeks ago
Posted a reply to Cron not running on scheduled time, on the site WordPress.org Forums:
Please take a look at the plugin FAQ, there's lots of information there about events…

2 weeks ago
Closed ticket #55160 on Core Trac:
Modern WP-ADMIN look

2 weeks ago
Posted a reply to Disable “Missing Dependencies” warning, on the site WordPress.org Forums:
Are you deregistering heartbeat? If so that's why you're seeing the broken dependencies message. You…

2 weeks ago
Mentioned in [52716] on Core SVN:
Query: Check if the theme supports `block-templates` before calling `locate_block_template()` in `get_query_template()`.

2 weeks ago
Posted a reply to disable wp-cron for page load, on the site WordPress.org Forums:
Sorry but this isn't what WP Crontrol is for. This plugin doesn't change the way…

3 weeks ago
Posted a reply to Payload size, on the site WordPress.org Forums:
Yeah it's quite easy for the HTML itself to run into the MB on a…

3 weeks ago
Posted a reply to Get Next Run Time on PHP Cron Event, on the site WordPress.org Forums:
I'm not sure in that case then, sorry. You don't need PHP tags, no.

3 weeks ago
Posted a reply to Get Next Run Time on PHP Cron Event, on the site WordPress.org Forums:
The $args array needs to match exactly in order for WordPress to find it. Internally…

3 weeks ago
Mentioned in [52697] on Core SVN:
Query: Check if the theme supports `block-templates` before calling `locate_block_template()` in `get_query_template()`.

3 weeks ago
Posted a reply to Different Total Time in Query Monitor and Browser Console, on the site WordPress.org Forums:
The time shown by QM is the server-side processing time for PHP to generate the…

3 weeks ago
Posted a reply to Link on Order page, on the site WordPress.org Forums:
The error message tells you the problem - you need to pass a WP_User instance…

3 weeks ago
Posted a reply to WP BOUNCER compatibility, on the site WordPress.org Forums:
Sorry you're having trouble here but I think you're best off asking the authors of…

3 weeks ago
Posted a reply to Ajax (500 error), on the site WordPress.org Forums:
I need the actual PHP error message from the PHP error log on your web…

4 weeks ago
Closed ticket #53069 on Core Trac:
Consider implications of FLoC and any actions to be taken on the ...

4 weeks ago
Closed ticket #55004 on Core Trac:
WP_Query IN operator has limits

4 weeks ago
Posted a reply to Ajax (500 error), on the site WordPress.org Forums:
What's the error message? You should be able to find this in your PHP error…

4 weeks ago
Pushed 1 commit to WordPress/WordPress:
Build/Test Tools: Switch to some more appropriate assertions.

4 weeks ago
Committed [52654] to Core SVN:
Build/Test Tools: Switch to some more appropriate assertions. See #54725

4 weeks ago
Pushed 1 commit to WordPress/WordPress:
Role/Capability: Correct the documented accepted types for the `capability` argument...

4 weeks ago
Committed [52653] to Core SVN:
Role/Capability: Correct the documented accepted types for the ...

4 weeks ago
Pushed 1 commit to WordPress/WordPress:
Docs: Increase the specificity of types in various inline documentation.

4 weeks ago
Committed [52652] to Core SVN:
Docs: Increase the specificity of types in various inline ...

4 weeks ago
Closed ticket #39089 on Core Trac:
Setting the Object Relationship Between Post Type Objects and Taxonomy ...

4 weeks ago
Closed ticket #37873 on Core Trac:
Consolidate customizer CSS

4 weeks ago
Closed ticket #31616 on Core Trac:
Splitting request_filesystem_credentials into separate functions

4 weeks ago
Closed ticket #54998 on Core Trac:
Fatal error using admin_email_check_interval filter on PHP 8.0

4 weeks ago
Posted a reply to PHP 8.1 deprecated warning, on the site WordPress.org Forums:
Unfortunately the "Component" detection in Query Monitor can't always get it 100% correct. I made…

4 weeks ago
Posted a reply to PHP 8.1 deprecated warning, on the site WordPress.org Forums:
Please report this to the author of the "worker" plugin, thanks.

4 weeks ago
Posted a reply to Every 30 days, clear user metafield “meta_key” from all users., on the site WordPress.org Forums:
Yep. You can use the "PHP Cron" event type to run the PHP that performs…

1 month ago
Posted a reply to Cannot Activate Query Monitor PHP Error Cannot Redeclare QM_PHP, on the site WordPress.org Forums:
It sounds like you had a db.php file left over or copied from somewhere else.…

1 month ago
Posted a reply to Appearing None in dahsboard event, on the site WordPress.org Forums:
This means the cron event is scheduled to run at the specified time but there…

1 month ago
Posted a reply to Custom URL or page instead of error “Could not switch users”, on the site WordPress.org Forums:
I'd rather fix the problem of why you're seeing the error message in the first…

1 month ago
Posted a reply to User Switch Link Not Visible For Certain Roles, on the site WordPress.org Forums:
A "Switch Back" link is shown in several places, including the admin toolbar, the login…

1 month ago
Committed [2664997] to Plugins SVN:
Updating readme/assets from GitHub

1 month ago
Committed [2664974] to Plugins SVN:
Updating readme/assets from GitHub

1 month ago
Mentioned in [52632] on Core SVN:
Docs: Docblock corrections for `get_block_file_template()`.

1 month ago
Mentioned in [52631] on Core SVN:
Docs: Docblock corrections for `get_block_file_template()`.

1 month ago
Pull request #38151 merged into WordPress/gutenberg:
Add a missing `@since` tag

1 month ago
Pull request #66 merged into wp-cli/cron-command:
Promote a non-200 response from the cron spawn test to an error

1 month ago
Submitted pull request #38151 to WordPress/gutenberg:
Add a missing `@since` tag

1 month ago
Submitted pull request #2206 to WordPress/wordpress-develop:
#54879 Docblock corrections for `get_block_file_template()`

1 month ago
Posted a reply to skip /wp-admin/*, on the site WordPress.org Forums:
You can conditionally call define( 'QM_DISABLE', true ) in your wp-config.php file when the path…

1 month ago
Mentioned in [52604] on Core SVN:
Users: Add new hooks to filter retrieve password emails.

1 month ago