code: public function stream_close()
      {
          @fclose($this->temporaryFileHandle);
  
          // Upload the file?
          if ($this->writeMode) {
              // Make sure the container exists
              $containerExists = $this->getStorageClient($this->fileName)->containerExists(
                  $this->getContainerName($this->fileName)
              );
              if (!$containerExists) {
                  $this->getStorageClient($this->fileName)->createContainer(
                      $this->getContainerName($this->fileName)
                  );
              }
  
              // Upload the file
              try {
                  $this->getStorageClient($this->fileName)->putBlob(
                      $this->getContainerName($this->fileName),
                      $this->getFileName($this->fileName),
                      $this->temporaryFileName
                  );
              } catch (BlobException $ex) {
                  @unlink($this->temporaryFileName);
                  unset($this->storageClient);
  
                  throw $ex;
              }
          }
  
          @unlink($this->temporaryFileName);
          unset($this->storageClient);
      }
docs: Close the stream
  
  @return void