Help me with sessions!!!!

jonsof

This is my code

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<meta name="Generator" content="Dev-PHP 1.3.0">
<title>Document Title</title>
</head>
<body>
<?php
session_start();
echo "<form method=post action=$PHP_SELF>
<input type=text name=var size=5><br>
<input type=submit name=submit value=submit>
</form>";
if($POST['submit'])
{$SESSION['var']=$_POST['var'];}
?>
</body>
</html>

I try to use sessions and the problem is below :

Cannot send session cookie - headers already sent by (output started at C:\phpdev\www\tests\~out.php:9

Cannot send session cache limiter - headers already sent (output started at C:\phpdev\www\tests\~out.php:9)

open(/tmp\sess_fb0370e88cd8ebd74c5f77d16c6d1f9e, O_RDWR) failed: No such file or directory (2)

open(/tmp\sess_fb0370e88cd8ebd74c5f77d16c6d1f9e, O_RDWR) failed: No such file or directory (2) in Unknown on line 0

Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/tmp) in Unknown on line 0

What is going on? Could you help me?

suntra

You must write session_start() before outputting anything.

Something like :

<?
session_start(); 
?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> 
<html> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> 
<meta name="Generator" content="Dev-PHP 1.3.0"> 
<title>Document Title</title> 
</head> 
<body> 
<?php 
echo "<form method=post action=$PHP_SELF> 
<input type=text name=var size=5><br> 
<input type=submit name=submit value=submit> 
</form>"; 
if($_POST['submit']) 
{$_SESSION['var']=$_POST['var'];} 
?> 
</body> 
</html>

By the way, please add quotes (") to you HTML tags...
<input type=text name=var size=5> => <input type="text" name="var" size=5>
( espace the quotes with a \ when you use echo...
echo "<input type=\"text\" name=\"var\" size=5>"; )

jonsof

It didn't work 🙁🙁🙁🙁🙁

What did i do wrong?

The Error Messages are exactly the same as i wrote in my fisrt post 🙁🙁🙁

suntra

The parameter session.save_path must contain a pathname that exists on your computer. Modify PHP configuration file.

jonsof

i have set
session.save_path = C:\phpdev\www\tests;

but it doesn't work.

I think my configurations are like in php manual, exactly the same but it doesn't work.
Where is my fault?

jonsof

I managed to use sessions, now the problem is : i want to auto redirect the user from a page to another using META tag refresh etc.
So then the sessions don't work. Could anyone explain to me why?

rIkLuNd

you must have session_start(); on the top of that page too!

jonsof

I have! but nothing!

Here is the code

page1.php

<? session_start();?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<meta name="Generator" content="Dev-PHP 1.3.0">
<title>Document Title</title>
</head>
<body>
<?php
echo "<form method=post action=$PHP_SELF>
<input type=text name=var size=5><br>
<input type=submit name=submit value=submit>
</form>";
$id=session_id();
if($_POST['submit'])
{echo $_SESSION['var']=$_POST['var'];
echo "<br>$id<br>";
echo "<meta http-equiv='refresh' content='3;url=page2.php?SID'>";}
?>
</body>
</html>

And the other script file page2.php

<? session_start();?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<!-- Creation Date: <?=Date("d/m/Y")?> -->
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<meta name="Generator" content="Dev-PHP 1.3.0">
<title>Document Title</title>
</head>
<body>
<?php
echo $_SESSION['var'];
?>
</body>
</html>

The echo of the second script doesn't work, why?

rIkLuNd

Try this:

if($_POST['submit'])
{
$var = $_POST['var'];
session_register('var');
echo "<br>$id<br>";
echo "<meta http-equiv='refresh' content='3;url=page2.php?SID'>";
}

Bijan

Hi, I think Jonsof is trying to store a variable into a session and echo it out in the second page, is that right? If so, he's not simply trying to register a session and in the 2nd page he just checks if it exists or not, but he wants to write the value of it out. Well, I just know that versions of PHP prior to 4 can not do this, since I had the same problem on my server running PHP 3 when I tried to upload my script that was working perfectly on my personal web server, then I just figured out that I have to rewrite some parts of my code, and this was one of them!

suntra

Does the directory "C:\phpdev\www\tests" exist ???

If it doesn't, create it.

jonsof

Dear rIkLuNd i tested you code but it didn't work as i expected, namely naothing hapened 🙁🙁🙁🙁

My php version is 4.2.3 apache 1.3.37.

Although i have read in manual that there are two ways you can pass a session variable from a page to another,however, the one of these don't work, an i mean via url.

Is any configuration that i must do? i checked my php.ini an all are right as manual refers. The directory exists and works properly.

What have i done wrong?
the meta tag doesn't seem to work even i put the SID after the name of the file and the question mark. page2.php?SID 🙁🙁

What else can i do?

Notice! When i use the <a href=''>blah blah</a> it works perfectly, where is the problem?

suntra

Well, you must put ?SID after each URL, but you also have to put the session id...

"http://...../file.php3?SID=" . session_id();

jonsof

I wrote the following codes as suntra said.

sessions.php

<? session_start(); ?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<!-- Creation Date: <?=Date("d/m/Y")?> -->
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<meta name="Generator" content="Dev-PHP 1.3.0">
<title>Document Title</title>
</head>
<body>
<?php
echo "<form method=post action=$PHP_SELF>
<input type=text name=var size=5><br>
<input type=submit name=submit value=submit>
</form>";
if($_POST['submit'])
{$id=session_id();

echo $_SESSION['var']=$_POST['var'];
echo "<br>$id<br>";
echo "SID<br>";
echo "<meta http-equiv='refresh' content='3;url=sessions2.php?SID=" . session_id()."'";}

?>
</body>
</html>

sessions2.php

<? session_start(); 
echo $_SESSION['var'];
echo "<a href='sessions3.php'>Next Page</a>";
?>

It doesn't work, why? $_SESSION['var'] gets unset i think, what is going on with sessions, i am getting mad 🙁🙁🙁

suntra

Sorry !!!

It's not SID, but PHPSESSID !

"...?PHPSESSID=" . session_id();

jonsof

Thank you suntra you advice was too helpfull for me

Instead of PHPSESSID i used SID like this

url=http://www.yoursite.com/nextpage.php?<? echo SID?> and worked perfectly!

I would be crazy if i did'n find it 🙂🙂