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<?php $acceptFormat = array( 'jpg' => 'image/jpeg', 'jpg' => 'image/jpg', 'png' => 'image/png' ); $ext ='jpg'; if (!in_array($ext,array_keys($acceptFormat))) { throw new RuntimeException('Invalid file format.'); } $mime = 'video/mkv'; if (!in_array($mime,array_values($acceptFormat))) { throw new RuntimeException('Invalid mime format.'); }

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