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
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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

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

22 mins 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…

23 hours 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.

24 hours 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…

2 days 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.…

2 days 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…

3 days 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…

3 days ago
Closed ticket #54933 on Core Trac:
use deprecated method on change switch theme.

4 days 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…

4 days ago
Committed [2664997] to Plugins SVN:
Updating readme/assets from GitHub

5 days ago
Committed [2664974] to Plugins SVN:
Updating readme/assets from GitHub

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

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

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

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

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

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

1 week ago
Created ticket #54879 on Core Trac:
Docblock corrections for `get_block_file_template()`

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

2 weeks ago
Posted a reply to Warning: array_shift() expects parameter 1 to be array, on the site WordPress.org Forums:
I'll take a look, thanks.

2 weeks ago
Mentioned in [52602] on Core SVN:
Script loader: Prevent DB errors during Multisite install.

2 weeks ago
Closed ticket #22602 on Core Trac:
Additional error handling when installing child and parent theme from ...

2 weeks ago
Posted a reply to Deprecated: Is Ajax is deprecated, on the site WordPress.org Forums:
WooCommerce is at version 6.1 so it's likely this.

2 weeks ago
Posted a reply to Deprecated: Is Ajax is deprecated, on the site WordPress.org Forums:
Sorry to hear this but this error is nothing to do with Query Monitor. Whatever…

2 weeks ago
Created ticket #54844 on Core Trac:
Unnecessary database queries when a block theme isn't in use

2 weeks ago
Posted a reply to php error log lines, on the site WordPress.org Forums:
Thanks for the report. is_ajax() isn't a WordPress function, it's a Query Monitor class method.…

2 weeks ago
Mentioned in [52572] on Core SVN:
Docs: Correct description for two HTTP API functions:

3 weeks ago
Posted a reply to Help with slow running please., on the site WordPress.org Forums:
If your server is well resourced and isn't the cause of your performance problems then…

3 weeks ago
Posted a reply to Retain Admin privileges whilst logged in as a user., on the site WordPress.org Forums:
Sorry but this beyond the scope of what User Switching was designed for. With User…

3 weeks ago
Posted a reply to SyntaxError: JSON.parse Cannot be edited by Elementor, on the site WordPress.org Forums:
Would you mind opening a support request with the Elementor folks please? They're better placed…

3 weeks ago
Posted a reply to Help with slow running please., on the site WordPress.org Forums:
Take a look through https://querymonitor.com/docs/how-to-use/ . I can't help too much because it would be…

3 weeks ago
Committed [2654343] to Plugins SVN:
Update to version 3.8.2 from GitHub

3 weeks ago
Pull request #397 merged into wp-cli/handbook:
Document the `exec` global parameter

3 weeks ago
Submitted pull request #397 to wp-cli/handbook:
Document the `exec` global parameter

3 weeks ago
Submitted pull request #2119 to WordPress/wordpress-develop:
#47280 - Remove `SQL_CALC_FOUND_ROWS` and lazy load `found_rows`

3 weeks ago
Posted a reply to WP Crontrol plugin supports latest version of PHP?, on the site WordPress.org Forums:
Yep. https://wordpress.org/plugins/wp-crontrol/#does%20this%20plugin%20work%20with%20php%208%3F

4 weeks ago
Posted a reply to XAMPP file copy issue with the db.php symlink file, on the site WordPress.org Forums:
Thanks, I'll add this info to that page.

4 weeks ago
Posted a reply to Warning in phperrors.php, on the site WordPress.org Forums:
Thanks. This should have been fixed in version 3.8.1. Can you check that you're on…

4 weeks ago
Posted a reply to Unknown: Use of mbstring.http_output is deprecated, on the site WordPress.org Forums:
mbstring.http_output is a setting in your php.ini file. It's not being caused by Query Monitor.

4 weeks ago
Posted a reply to ~NEW ISSUE~ Ver 3.8.0 Compile error, on the site WordPress.org Forums:
This issue has been fixed in version 3.8.1. Thanks for the report.

4 weeks ago
Committed [2651722] to Plugins SVN:
Update to version 3.8.1 from GitHub

4 weeks ago
Posted a reply to User Switching does not work at all, on the site WordPress.org Forums:
Does your user account have permission to edit the user(s) that you're trying to switch…

4 weeks ago
Pushed 1 commit to WordPress/WordPress:
Docs: Further corrections and improvements to the inline documentation for...

1 month ago
Committed [52423] to Core SVN:
Docs: Further corrections and improvements to the inline documentation ...

1 month ago
Pushed 1 commit to WordPress/WordPress:
Docs: Miscellaneous inline documentation improvements.

1 month ago
Committed [52422] to Core SVN:
Docs: Miscellaneous inline documentation improvements. See #53399

1 month ago
Posted a reply to 3.7.0, 3.7.1 and, 3.8.0 Errors, on the site WordPress.org Forums:
Thanks for the report. To clarify, does that mean the error you saw persists when…

1 month ago
Posted a reply to ~NEW ISSUE~ Ver 3.8.0 Compile error, on the site WordPress.org Forums:
Ah this error only occurs on PHP 7.1 or older. I'll get this fixed, but…

1 month ago
Posted a reply to ~NEW ISSUE~ Ver 3.8.0 Compile error, on the site WordPress.org Forums:
Which version of PHP are you using please?

1 month ago