"If cookies are disabled on a visitor's machine, should you try using sessions" PHP can try to work around this problem by rewriting all the URLs, but it's very insecure: best just to ask your users to enable cookies.
"Sessions are terminated when your visitor navigates away from your site: true or false" False: the session is only terminated when the browser is closed.
"Because sessions are stored on your server, they are more secure: true or false" True.
"You always need to call serialize() before storing an array in a session: true or false" False, but it's recommended anyway as it makes your intentions clear.
"Which php.ini directive allows you to specify how long a session should be considered active" The answer is "f", session.gc_maxlifetime.
"If you are using a custom session data handler, what should the session read function return if no data exists for the current session" An empty string.
Want to learn PHP 7?
Hacking with PHP has been fully updated for PHP 7, and is now available as a downloadable PDF. Get over 1200 pages of hands-on PHP learning today!
If this was helpful, please take a moment to tell others about Hacking with PHP by tweeting about it!
Next chapter: Answers to Chapter 11 >>
Previous chapter: Answers to Chapter 9
Jump to:
Home: Table of Contents
Copyright ©2015 Paul Hudson. Follow me: @twostraws.