Deprecation: #76804 - Deprecate GeneralUtility::strtoupper & strtolower

See Issue #76804

Description

The following methods within GeneralUtility have been marked as deprecated:

  • strtoupper()
  • strtolower()

Impact

Calling any of the methods above will trigger a deprecation log entry.

Affected Installations

Any installation with a 3rd party extension calling one of the methods in its PHP code.

Migration

Instead of GeneralUtility::strtoupper($value) use:

mb_strtoupper($value, 'utf-8');

Instead of GeneralUtility::strtolower($value) use:

mb_strtolower($value, 'utf-8');

Alternatively use the native implementation of strtoupper($value) or strtolower($value) if the handled string consists of ascii characters only.