note 68652 modified in function.session-set-save-handler by felipe

the behavior, return values, and exact time of calling for these functions is pretty poorly documented here. i thought folks might like to know that: 1) calling session_start() triggers PHP to first call your open function and then call your read function before resuming with the code immediately following your session_start() call. 2) calling session_id('some_value') within your open function WILL NOT SET THE SESSION COOKIE (at least not on my setup - PHP 4.4.1). Assuming you defined some function to validate a session id called my_func(), you might want to do something like this in your open function: <?php function _open($save_path, $session_name) { // check for session id $sess_id = session_id(); if (empty($sess_id) || !myfunc($sess_id)) { //session_id is INVALID - generating new $new_id = md5(uniqid("some random seed here")); session_id($new_id); setcookie(session_name(), $new_id, 0, "/", ".mydomain.com"); } return true; } // _open() ?> --was-- the behavior, return values, and exact time of calling for these functions is pretty poorly documented here. i thought folks might like to know that: 1) calling session_start() triggers PHP to first call your open function and then call your read function before resuming with the code immediately following your session_start() call. 2) calling session_id('some_value') within your open function WILL NOT SET THE SESSION COOKIE (at least not on my setup - PHP 4.4.1). Assuming you defined some function to validate a session id called my_func(), you might want to do something like this in your open function: [PHP] <?php function _open($save_path, $session_name) { // check for session id $sess_id = session_id(); if (empty($sess_id) || !myfunc($sess_id)) { //session_id is INVALID - generating new $new_id = md5(uniqid("some random seed here")); session_id($new_id); setcookie(session_name(), $new_id, 0, "/", ".mydomain.com"); } return true; } // _open() ?> [/PHP] PS: CAN WE GET SOME REAL DOCUMENTATION FOR WHAT THESE FUNCTIONS ARE, WHAT THEY REQUIRE, WHEN THEY ARE CALLED, AND WHAT EXACTLY THEY ARE SUPPOSED TO DO? http://php.net/manual/en/function.session-set-save-handler.php