I am new in pligg.I want to know that after completing website can I check it locally with IP address like http://127.0.0.1/pligg/index.php.
and also in local area network with IP address of system ike http://127.0.0.1/pligg/index.php.


It's possible, but we aren't going to describe how to do that since it's not directly related to Pligg.
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