Line 14: Declare the class session.

Line 16 to 23: Declare some variables this class hold.

• $session_id
• $cookie_data
• $browser
• $ip
• $page
• $current_page_filename
• $load
• $time_now

Line 39: Declare the function start

Line 41 to 48: Initialize some variable, and get the time, browser, current page, and cookie data to store them.

Line 49 to 59: If we're using a cookie, grab data from that cookie, and store session id.

Line 60 to 64: Otherwise we're using session... do it the 'session' way.

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