note 80413 deleted from faq by philip

Note Submitter: vlad-45 at voliacable dot com ---- I spend too much time with session_set_save_handler() but could not use it. I work with Apache/1.3.12 (Win32) PHP/5.1.2 in local mode, if it matters. I want to use handler destroy() but it does not work. If I need to determine all handlers, then I have a problem with write(). Function write() does not want to create and open storage file. If file created outside the function, it still would not be opened. Actually, write() refuses to create any file. But debug output shows that write() was called and had all the necessary data. This problem can be solved by removing of function write(). Session will create storage file and write data in it. But function destroy() refuses to work in any case. (It's the only function I need.) After closing of browser the storage file remains and file temp (debug output) is absent. Maybe closing of browser does not mean end of session (although next time the session id will be different), but let's see how function write() works: <?php function open($save_path, $session_name) { global $sess_save_path; $sess_save_path = $save_path; echo "$session_name successfully opened<br>"; ////debug return(true); } function close() { return(true); } function read($id) { global $sess_save_path; $sess_file = "$sess_save_path/sess_$id"; return (string) @file_get_contents($sess_file); } function write($id, $sess_data) { echo "write begin<br>"; //////debug global $sess_save_path; $sess_file = "$sess_save_path/sess_$id"; echo "$sess_file<br>"; ////debug echo "$sess_data<br>"; /////debug if ($fp = @fopen($sess_file, "w")) { $return = fwrite($fp, $sess_data); fclose($fp); return $return; } else { echo "did not open file for writing<br>"; //////debug return(false); } } function destroy($id) // works in no case { global $sess_save_path; $f = @fopen("./tmp/temp", "w"); /////debug $sess_file = "$sess_save_path/sess_$id"; return(@unlink($sess_file)); } function gc($maxlifetime) { global $sess_save_path; foreach (glob("$sess_save_path/sess_*") as $filename) { if (filemtime($filename) + $maxlifetime < time()) { @unlink($filename); } } return true; } session_set_save_handler("open", "close", "read", "write", "destroy", "gc"); session_save_path("./tmp"); // temporary storage session_name("counter"); session_start(); //$id = session_id(); //If I use these 3 strings, file will be created, //$sess_file = "$sess_save_path/sess_$id"; // but would not be opened by write() all the same. //$fp = @fopen($sess_file, "w"); // file will be empty if (!(session_is_registered("someVar"))) // new session { echo "someVar not registered<br>"; ////debug session_register("someVar"); // session variable $_SESSION["someVar"] = "someValue"; } echo "it still works<br>"; ////debug ?> File temp was not created. A storage file was not created and output in browser was as follows: counter successfully opened someVar not registered it still works write begin ./tmp/sess_a4bc6c82ab15635de77bd0c9c74b13d4 someVar|s:9:"someValue"; did not open file for writing Who could explain this phenomenom?