[OOP + session_set_save_handler() ] Works on PHP5, not on PHP4!!!

**mdsjack** · Jan 30, 2005 12:28

I read everything about this topic (aslo on forum), but...

The code below drives me crazy!!! It seems to work fine on php5, but on php4 it does not write session data (but seems to read).

It's a custom session handling class.
(This is the simplest version of it, made just to find the problem. Inside my application I use it throu a child class with some more custom methods...)

WHAT'S WRONG??? Did I forget to set something? Try yourself first in php5, then in php4.

Please give me a hand.

PHP Code:


<?php



    class session

    {

        var $path = '_temp/';

        var $name = 'userid';

        var $life = '1 day';

        var $srcfile;

        

        function session()

        {

            

        }

        

        function start()

        {

            ini_set('session.use_cookies', '1');

            ini_set('session.gc_maxlifetime', strtotime($this->life, 0));

            

            ini_set('session.save_handler', 'user');

            

            session_name($this->name);

            session_save_path($this->path);

            

            session_set_save_handler

            (    array(&$this, 'open')

            ,    array(&$this, 'close')

            ,    array(&$this, 'read')

            ,    array(&$this, 'write')

            ,    array(&$this, 'destroy')

            ,    array(&$this, 'gc')

            );

            

            register_shutdown_function('session_write_close');

            

            session_start();

        }

        

        function set($s_var, $value = null)

        {

            if ($value !== null)

                

                $_SESSION[$s_var] = $value;

            

            else unset($_SESSION[$s_var]);

            

            return true;

        }

        

        function get($s_var = '')

        {

            if (!$s_var) return empty($_SESSION);

            

            return array_key_exists($s_var, $_SESSION) ? $_SESSION[$s_var] : null;

        }

        

        function open($s_path, $s_name)

        {

            $this->srcfile = sprintf('%s%s.%s', $s_path, session_id(), $s_name);

            echo 'FILE = '.$this->srcfile;

            

            if(!file_exists($this->srcfile))

            {

                $f = fopen($this->srcfile, 'w');

                fclose($f);

            }

            return true;

        }

        

        function close()

        {

            return true;

        }

        

        function read($s_id)

        {

            $s_data = file_get_contents($this->srcfile);

            return $s_data;

        }

        

        function write($s_id, $s_data)

        {

            $handle = fopen($this->srcfile, 'wb');

            fwrite($handle, $s_data);

            fclose($handle);

            return true;

        }

        

        function destroy($s_id)

        {

            @unlink($this->srcfile);

            return true;

        }

        

        function gc($s_maxlifetime)

        {

            foreach (glob($this->path.'*.'.$this->name) as $file)

                

                if (time()-fileatime($file) > $s_maxlifetime)

                    

                    if (!unlink($file)) { break; return false; }

            

            clearstatcache();

            

            return true;

        }

    }



$sess = &new session;



$sess->start();

#session_destroy();

if(!empty($_GET['sess'])) $sess->set($_GET['sess'], $_GET['sessv']);

#echo $sess->set('false', 'ciao');



print_r($_SESSION);



?>

<html>

<head>

<meta http-equiv="content-type" content="text/html; charset=utf-8" />

<title></title>

</head>

<body>

<form name="mioform" action="" method="get" accept-charset="utf-8" enctype="multipart/form-data">

<input type="text" name="sess" value="">

<input type="text" name="sessv" value=""><input type="submit" name="go"><input type="button" onclick="self.location.href = 'sestest.php'" value="altrapag">

</form>

</body>

</html>

ciao,
jack.

**sinatosk** · Feb 5, 2005 06:29

might be wrong but by the looks of your code your not defining a correct path

**mdsjack** · Feb 9, 2005 05:49

I edited, I forgot the path in that sample code, but it points to a subfolder of the script.

What's wrong now?

**sinatosk** · Feb 9, 2005 05:53

don't know sorry. I've always found PHP built in session handler to be damn fussy at times.... so I just programme my own custom session handler from scratch...

**mdsjack** · Feb 9, 2005 06:07

I prefer this method because using php session cookie to pass values is easier than writing a SID on each link...

If you know different ways, tell... :|

**lit0** · Mar 2, 2005 16:52

I have fighting with the session_set_save_handler function (I was died)

I found an bug (or not bug), my problem it was that never save the session file in my folder sesion location.

You must open and read the original session file, and now you can open other session file and write in this.

This is my code:

PHP Code:


<?php

class Sesion {

    var $tmp;

    var $real;

    var $fp = false;

    var $fpr = false;

    var $tempo = 0;



    function Sesion () {

        $this->tempo = 60*60;



        ini_set('session.use_cookies', '1');

        ini_set('session.gc_maxlifetime', $this->tempo);

        ini_set('session.save_handler', 'user');

    }



    function inicia () {

        session_set_save_handler(

            array(&$this, "abrir"),

            array(&$this, "pechar"),

            array(&$this, "ler"),

            array(&$this, "escribir"),

            array(&$this, "destruir"),

            array(&$this, "caducar")

        );

    }



    function abrir ($save_path, $session_name) {

        global $paths;



        $this->tmp = $save_path."/sess_".session_id();

        $this->real = $paths["session"].base64_encode(session_id());



        return (true);

    }



    function pechar () {

        flock($this->fpr, LOCK_UN);

        fclose($this->fpr);



        flock($this->fp, LOCK_UN);

        fclose($this->fp);



        return (true);

    }



    function ler ($id) {

        if ($this->fpr = @fopen($this->real, "r")) {

            flock($this->fpr, LOCK_EX);

            $datos = @fread($this->fpr, @filesize($this->real));

        }



        if ($this->fp = @fopen($this->tmp, "r")) {

            flock($this->fp, LOCK_EX);

            $sess_data = @fread($this->fp, @filesize($this->tmp));

            return $datos;

        } else {

            return (""); // Must return "" here.

        }

    }



    function escribir ($id, $sess_data) {

        if ($this->fpr = @fopen($this->real, "w")) {

            flock($this->fpr, LOCK_EX);

            @fwrite($this->fpr, $sess_data);

        }



        if ($this->fp = @fopen($this->tmp, "w")) {

            flock($this->fp, LOCK_EX);

            return (@fwrite($this->fp, "1"));

        } else {

            return (false);

        }

    }



    function destruir ($id) {

        unlink($this->real);

        return unlink($this->tmp);

    }



    function caducar ($maxlifetime) {

        $dir = dirname($this->real);

        $dp = opendir($dir);



        while ($cada = readdir($dp)) {

            if ($cada != "."

             && $cada != ".."

            && time()-fileatime($dir."/".$cada) > $maxlifetime) {

                @unlink($dir."/".$cada);

            }

        }



        closedir($dp);



        $dir = dirname($this->tmp);

        $dp = opendir($dir);



        while ($cada = readdir($dp)) {

                echo time()."-".fileatime($dir."/".$cada)." > $maxlifetime == ".(time()-fileatime($dir."/".$cada))."\n<br>\n";

            if ($cada != "."

             && $cada != ".."

            && ereg("^sess_", $cada)

            && time()-fileatime($dir."/".$cada) > $maxlifetime) {

                echo time()."-".fileatime($dir."/".$cada)." > $maxlifetime";

                @unlink($dir.$cada);

            }

        }



        closedir($dp);



        return true;

    }

}



$sesion = &new Sesion();

$sesion->inicia();

?>

And now It's work. I save a false data in the PHP session and a real data in my file session.

if I not open the original file session or change the path or name, it not work.

This code it's a piece of a real and more extended code.

User Tag List

Thread: [OOP + session_set_save_handler() ] Works on PHP5, not on PHP4!!!

Thread Tools

Display

[OOP + session_set_save_handler() ] Works on PHP5, not on PHP4!!!

RE: Open original session file

Bookmarks

Bookmarks

Posting Permissions