I've found this code 
$$xmlScalar_r = pack('U0C*', unpack('U0C*', SGMLencode_data($$xmlScalar_r)||(defined($$xmlScalar_r) ? $$xmlScalar_r : '') ));
regardless of everything in the end, it is then just something like: 
$string = ...
$x = pack('U0C*', unpack('U0C*', $string));

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I see nothing different which cannot be done as just 
$x = $string      #or without even $string, just $x = ...

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so it would seem a useless usage of pack and unpack being the template the same.

Are there special cases of any sort (e.g. different environments, architectures)
where the pack/unpack achieve anything different ?
Thanks

In reply to pack on unpack with same template by jjmoka

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