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What will the function session_id() return is no parameter is passed?

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What will the function session_id() return is no parameter is passed?

(a) Current Session Identification Number

(b) Previous Session Identification Number

(c) Last Session Identification Number

(d) Error

I have been asked this question in homework.

My question is based upon Session Handling-2 topic in chapter File and Session Handling in PHP of PHP

1 Answer

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Best answer
Right answer is (a) Current Session Identification Number

Best explanation: The function session_id() will return the session id for the current session or the empty string (” “) if there is no current session.

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