Session support in PHP consists of a way to preserve certain data across subsequent accesses. This enables you to build more customized applications and increase the appeal of your web site.

Session Functions

• session_cache_expire — Return current cache expire
• session_cache_limiter — Get and/or set the current cache limiter
• session_commit — Alias of session_write_close
• session_decode — Decodes session data from a string
• session_destroy — Destroys all data registered to a session
• session_encode — Encodes the current session data as a string
• session_get_cookie_params — Get the session cookie parameters
• session_id — Get and/or set the current session id
• session_is_registered — Find out whether a global variable is registered in a session
• session_module_name — Get and/or set the current session module
• session_name — Get and/or set the current session name
• session_regenerate_id — Update the current session id with a newly generated one
• session_register — Register one or more global variables with the current session
• session_save_path — Get and/or set the current session save path
• session_set_cookie_params — Set the session cookie parameters
• session_set_save_handler — Sets user-level session storage functions
• session_start — Initialize session data
• session_unregister — Unregister a global variable from the current session
• session_unset — Free all session variables
• session_write_close — Write session data and end session