BackdropLocalStreamWrapper::unlink in core/includes/stream_wrappers.inc

Support for unlink().

ConfigFileStorage::delete in core/includes/config.inc

Deletes a configuration object from the storage.

drupal_unlink in core/includes/drupal.inc

Deletes a file.

FileTransferLocal::removeDirectoryJailed in core/includes/filetransfer/local.inc

Removes a directory.

FileTransferLocal::removeFileJailed in core/includes/filetransfer/local.inc

Removes a file.

FileValidatorTest::testFileValidateImageResolution in core/modules/simpletest/tests/file.test

This ensures the resolution of a specific file is within bounds. The image will be resized if it's too large.

file_unmanaged_delete in core/includes/file.inc

Deletes a file without database changes or hook invocations.

LocaleExportFunctionalTest::testExportTranslation in core/modules/locale/tests/locale.test

Test exportation of translations.

LocaleImportFunctionalTest::importPoFile in core/modules/locale/tests/locale.test

Helper function: import a standalone .po file in a given language.

LocalePluralFormatTest::importPoFile in core/modules/locale/tests/locale.test

Imports a standalone .po file in a given language.