apermo (@apermo) – WordPress user profile

WordPress Origin Story

I started of doing mostly TYPO3 when my good friend Hendrik Luehrsen @luehrsen talked in the highest tones about WordPress. Later during my agency days, I started working with WordPress, and in 2012 I attended my first WordCamp in Berlin, which was called WPCamp. On my second WordCamp in 2013, I met Robert Windisch @nullbyte, well and for everyone who knows Robert, this is all you need to know. Since that day, I’ve only missed a 3 WordCamps in Germany, I became founder and host of my local WordPress Meetup and I’m part of the “usual suspects” to buy a WordCamp ticket on release day.

Since 2014 I call myself an in-house developer for WordPress, doing WordPress as a full-time job. During these days I’ve dug very deep into multiple areas of the WordPress code, found a few bugs, suggested some improvements and the best is yet to come.

Contributions Sponsored

Coding Pioneers GmbH sponsors apermo to contribute 4 hours per week to the following teams: Community and Core.

Member Since: November 6th, 2011
Location: Germany, Bergkamen
Website: christoph-daum.de
GitHub: apermo
Job Title: Senior Software Developer
Employer: Coding Pioneers
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Contribution History

Core Contributor
Documentation Contributor
Meetup Organizer
Plugin Developer
Translation Contributor
Translation Editor
WordCamp Speaker

Activity
Plugins
Favorites
Translations

Mentioned in [59987] on Core SVN:
Media: Add 'muted' attribute and normalize HTML attributes.
2 hours ago
Confirmed as a speaker for WordCamp Vienna 2025
5 days ago
Mentioned in [59951] on Core SVN:
Editor: Fix unexpected behavior due to conflicting custom block template.
1 week ago
Submitted pull request #8434 to WordPress/wordpress-develop:
feat: Added action 'maybe_serialize_data_is_serialized' to inform about double serialization.
2 weeks ago
Mentioned in [59870] on Core SVN:
Date/Time: Add sanitization to `WP_Locale::get_month()`.
3 weeks ago
Mentioned in [59759] on Core SVN:
Administration: Fix pagination in categories, tags, and plugins tables.
1 month ago
Mentioned in [59727] on Core SVN:
Administration: Fix pagination in categories, tags, and plugins tables.
2 months ago
Submitted pull request #8191 to WordPress/wordpress-develop:
feat(WP_Term): added getter and setter for backwards compatibility
2 months ago
Created ticket #62863 on Core Trac:
_make_cat_compat() - dynamic properties deprecated in PHP 8.2
2 months ago
Mentioned in [59704] on Core SVN:
Docs: Improve @return docblock section for `get_category()`.
2 months ago
Submitted pull request #8166 to WordPress/wordpress-develop:
docs(get_category()): Changed PHPDoc for return and added more information
2 months ago
Created ticket #62842 on Core Trac:
PHPDoc of get_category() is misleading
2 months ago
Submitted pull request #8142 to WordPress/wordpress-develop:
Add sanitization to WP_Locale::get_month()
2 months ago
Created ticket #62824 on Core Trac:
single_month_title() can cause a warning.
2 months ago
Mentioned in [59630] on Core SVN:
REST API: Fix PHP warning about undefined `paged` argument in various REST API endpoints.
2 months ago
Mentioned in [59588] on Core SVN:
Media: enable high bit depth resized image output with Imagick.
2 months ago
Closed pull request #7635 on WordPress/wordpress-develop:
Fix for 62292 - Warning on WP_REST_[...]_Controller::get_items()
3 months ago
Mentioned in [59559] on Core SVN:
Themes: Add an ID to the block theme skip link.
3 months ago
Mentioned in [59548] on Core SVN:
Docs: Update parameter type hints to include `null` for post thumbnail functions.
3 months ago
Created ticket #62720 on Core Trac:
Incomplete phpdoc typehints for get_the_post_thumbnail_url()
3 months ago
Mentioned in [59472] on Core SVN:
Editor: Add description for Banners block pattern category.
4 months ago
Mentioned in [59435] on Core SVN:
Media: Avoid images with `sizes=auto` to be displayed downsized in supporting browsers.
4 months ago
Mentioned in [59433] on Core SVN:
i18n: Account for `load_*_textdomain()` after JIT loading.
4 months ago
Submitted pull request #7847 to WordPress/wordpress-develop:
Notify about double serialization. - 62483
4 months ago
Created ticket #62483 on Core Trac:
maybe_serialize() does support double serialization, but does not the ...
4 months ago
Mentioned in [59430] on Core SVN:
i18n: Account for `load_*_textdomain()` after JIT loading.
4 months ago
Mentioned in [59415] on Core SVN:
Media: Avoid images with `sizes=auto` to be displayed downsized in supporting browsers.
4 months ago
Mentioned in [59411] on Core SVN:
HTML API: Fix normalized doctype pub/sys identifier quotes.
4 months ago
Mentioned in [59410] on Core SVN:
HTML API: Fix normalized doctype pub/sys identifier quotes.
4 months ago
Mentioned in [59381] on Core SVN:
Media: Remove dimension suffix from full size converted HEIC images.
4 months ago
Mentioned in [59379] on Core SVN:
Media: Remove dimension suffix from full size converted HEIC images.
4 months ago
Mentioned in [59378] on Core SVN:
Docs: Add file header DocBlock for `wp-signup.php`.
4 months ago
Mentioned in [59367] on Core SVN:
Media: Fix converting of all HEIC/HEIF images to JPEGs after uploading regardless of dimensions.
4 months ago
Mentioned in [59360] on Core SVN:
Media: Fix uploading of .heic images.
4 months ago
Mentioned in [59346] on Core SVN:
Media: Better variable name and some docs fixes for the new `wp_get_image_editor_output_format()`.
4 months ago
Mentioned in [59340] on Core SVN:
Coding Standards: Use explicit returns in `WP_Site_Health_Auto_Updates::test_*()`.
4 months ago
Mentioned in [59324] on Core SVN:
Global styles: preload `/global-styles` endpoint responses
5 months ago
Mentioned in [59316] on Core SVN:
Global styles: preload `/global-styles` endpoint responses
5 months ago
Mentioned in [59315] on Core SVN:
Media: Fix uploading of .heic images.
5 months ago
Submitted pull request #7663 to WordPress/wordpress-develop:
Fixes possible Warning: Undefined array key "height"/"width" in wp_image_src_get_dimensions()
5 months ago
Created ticket #62312 on Core Trac:
wp_image_src_get_dimensions() - Warning for SVG with postmeta height ...
5 months ago
Mentioned in [59296] on Core SVN:
Site Health: Update inline docs following refactor of debug data.
5 months ago
Closed ticket #62293 on Core Trac:
wp_get_missing_image_subsizes() - Warning: Undefined array key "height"
5 months ago
Mentioned in [59290] on Core SVN:
Site Health: Update inline docs following refactor of debug data.
5 months ago
Submitted pull request #7637 to WordPress/wordpress-develop:
Fixes possible Warning: Undefined array key "height" in wp_get_missing_image_subsizes()
5 months ago
Created ticket #62293 on Core Trac:
wp_get_missing_image_subsizes() - Warning: Undefined array key "height"
5 months ago
Submitted pull request #7635 to WordPress/wordpress-develop:
Fix for 62292 - Warning on WP_REST_[...]_Controller::get_items()
5 months ago
Created ticket #62292 on Core Trac:
Warning in WP_REST_Posts_Controller::get_items()
5 months ago
Submitted pull request #7625 to WordPress/wordpress-develop:
Fixes the warning if null is given to prepare_items_query()
5 months ago
Created ticket #62287 on Core Trac:
WP_REST_Posts_Controller::prepare_items_query() - Warning ...
5 months ago