Deprecation: #86389 - GeneralUtility::_GETset() and TSFE->mergingWithGetVars() 

See forge#86389

Description 

Two methods related to setting global $_GET parameters have been marked as deprecated:

  • TYPO3\CMS\Core\Utility\GeneralUtility::_GETset()
  • TYPO3\CMS\Frontend\Controller\TypoScriptFrontendController->mergingWithGetVars()

The two methods are wrappers to set the $_GET properties, however, this concept has been superseded by using the PSR-7 request object within PSR-15 middlewares to replace the variables.

Impact 

Calling any of the two methods within PHP will trigger a PHP E_USER_DEPRECATED error.

Affected Installations 

Any installation making use of these methods within a TYPO3 extension, e.g. RealURL.

Migration 

Implement a custom PSR-15 middleware to update the PSR-7 request object, and to manually set $_GET on top, as long as TYPO3 still supports GeneralUtility::_GP(), although these methods will vanish in the near future.

Relying on the request object, and using PSR-15 middlewares to manipulate request parameters is more future-proof for extensions and TYPO3 sites.