warning after using session_start()

unix77

Hi all

It is the first time for me to use session function. Below my simple list

session_start();

print("Session_id : ".session_id()."<br>");

session_destroy();

print("After close session <br>\n");
print("Session_id : ".session_id()."<br>");

but in my browser, there are some warnings appear

Warning: session_start(): open(/tmp\sess_a1c40f1e51d34760eb047e976b402315, O_RDWR) failed: No such file or directory (2) in d:\belajar\php belajar\session\buatsesi.php on line 2

Warning: session_start(): Cannot send session cookie - headers already sent by (output started at d:\belajar\php belajar\session\buatsesi.php:2) in d:\belajar\php belajar\session\buatsesi.php on line 2

Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at d:\belajar\php belajar\session\buatsesi.php:2) in d:\belajar\php belajar\session\buatsesi.php on line 2
Session_id : a1c40f1e51d34760eb047e976b402315

Warning: session_destroy(): Session object destruction failed in d:\belajar\php belajar\session\buatsesi.php on line 6
After close session
Session_id :

how can it be happen? thanks

Installer

Have you ensured that the directory "/tmp" exists?

RossC0

You outputted something before you did session_start();

This isn't allowed as session_start() sets Headers in the HTTP Response.

Installer

If that were so, then his first error wouldn't be "...no such file..." and the output started line wouldn't be the same one that "session_start()" is on. The sequence of messages is exactly consistent with a non-existent "session.save_path".

RossC0

Sorry your right, so do as Installer says:

Have you ensured that the directory "/tmp" exists?

Could permissions be an issue?

hagen00

Howzit,

The first thing i noticed ...

open(/tmp\sess_a1c40f1e51d34760eb047e976b402315, O_RDWR) failed: No such file or directory (2) in d:\belajar\php belajar\session\buatsesi.php on line 2

You are running php on a windows box right? I assume, looking at d:\belajar\ ...etc

But /tmp is a folder on Linux machines. Did you copy and paste code from somewhere that was intended for Linux?

Secondly. In your code, just make sure that before you have the <html> tag to do all your session work like session_start(). As was already pointed out, you can't have html tags and then start the session or do sesison work. This needs to happen before you send the php page.

hope that helps

hagen