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<?php $filePath = 'missing_file'; $realFilePath = realpath($filePath); $fileInfo = new SplFileInfo($realFilePath); var_dump($fileInfo->getRealPath());
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.29, 8.2.0 - 8.2.21, 8.3.0 - 8.3.9
string(1) "/"

preferences:
136.32 ms | 404 KiB | 219 Q