PHP Compatibility Index

Is WP fail2ban compatible with PHP 8?

Version 5.5.0 · 60,000+ active installs · requires PHP 7.4

Works on PHP 8.0–8.5, with deprecation notices from 8.4

No removed PHP features found in WP fail2ban 5.5.0. It uses 17 deprecated feature(s) that only log notices today.

PHP 8.0
✓
PHP 8.1
✓
PHP 8.2
✓
PHP 8.3
✓
PHP 8.4
⚠ 17
PHP 8.5
⚠ 17

✓ no problems · ⚠ deprecation notices only (still works) · ✗ uses something removed in that PHP version

Check your whole site, not just one plugin. The free PHP Upgrade Check plugin scans every plugin and theme you have installed (including premium and custom ones) and explains each problem. It runs on any host.

Deprecated (works today, logs notices)

File:lineWhat
admin/admin.php:179Implicitly marking a parameter as nullable is deprecated since PHP 8.4. Update the type to be explicitly nullable instead. Found implicitly nullable parameter: $page.
admin/config.php:130Implicitly marking a parameter as nullable is deprecated since PHP 8.4. Update the type to be explicitly nullable instead. Found implicitly nullable parameter: $title.
admin/lib/tab.php:238Implicitly marking a parameter as nullable is deprecated since PHP 8.4. Update the type to be explicitly nullable instead. Found implicitly nullable parameter: $input.
admin/lib/tab.php:518Implicitly marking a parameter as nullable is deprecated since PHP 8.4. Update the type to be explicitly nullable instead. Found implicitly nullable parameter: $suffix.
admin/lib/tab.php:646Implicitly marking a parameter as nullable is deprecated since PHP 8.4. Update the type to be explicitly nullable instead. Found implicitly nullable parameter: $value.
admin/lib/tab.php:686Implicitly marking a parameter as nullable is deprecated since PHP 8.4. Update the type to be explicitly nullable instead. Found implicitly nullable parameter: $value.
admin/lib/tab.php:712Implicitly marking a parameter as nullable is deprecated since PHP 8.4. Update the type to be explicitly nullable instead. Found implicitly nullable parameter: $value.
feature/plugins.php:246Implicitly marking a parameter as nullable is deprecated since PHP 8.4. Update the type to be explicitly nullable instead. Found implicitly nullable parameter: $message_slug.
lib/compat.php:86Implicitly marking a parameter as nullable is deprecated since PHP 8.4. Update the type to be explicitly nullable instead. Found implicitly nullable parameter: $remote_addr.
lib/ip-range-list.php:39Implicitly marking a parameter as nullable is deprecated since PHP 8.4. Update the type to be explicitly nullable instead. Found implicitly nullable parameter: $cacheTag.
lib/ip.php:284Implicitly marking a parameter as nullable is deprecated since PHP 8.4. Update the type to be explicitly nullable instead. Found implicitly nullable parameter: $cacheTag.
lib/loader.php:723Implicitly marking a parameter as nullable is deprecated since PHP 8.4. Update the type to be explicitly nullable instead. Found implicitly nullable parameter: $settings.
lib/loader.php:744Implicitly marking a parameter as nullable is deprecated since PHP 8.4. Update the type to be explicitly nullable instead. Found implicitly nullable parameter: $settings.
lib/loader.php:784Implicitly marking a parameter as nullable is deprecated since PHP 8.4. Update the type to be explicitly nullable instead. Found implicitly nullable parameter: $settings.
lib/loader.php:801Implicitly marking a parameter as nullable is deprecated since PHP 8.4. Update the type to be explicitly nullable instead. Found implicitly nullable parameter: $settings.
lib/syslog.php:141Implicitly marking a parameter as nullable is deprecated since PHP 8.4. Update the type to be explicitly nullable instead. Found implicitly nullable parameter: $remote_addr.
lib/syslog.php:191Implicitly marking a parameter as nullable is deprecated since PHP 8.4. Update the type to be explicitly nullable instead. Found implicitly nullable parameter: $remote_addr.

Plugin page on WordPress.org: wp-fail2ban