Why session_start is needed when using session?

Posted by SpawnCxy on Stack Overflow See other posts from Stack Overflow or by SpawnCxy
Published on 2010-03-17T09:18:28Z Indexed on 2010/03/17 9:21 UTC
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session

Why I can use setcookie without any preparation while need a session_start() before using $_SESSION?And I think works they do are similar.

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