session with time limit

[jadoo]

I have probem with session the code is as given below .this genrates error :

Fatal error: Call to undefined function: session_cache_e xpire() in c:\apache\htdoc s\phppgm\employ ee files\authentic ate.php on line 6

//code
<?
session_cache_l imiter('private ');
$cache_limiter = session_cache_l imiter();
session_cache_e xpire(15);
$cache_expire = session_cache_e xpire();
session_start() ;
?>

<?php
if(!$uname or !$password )
{
echo("Enter all fields");
exit();
}
if($uname and $password)
{
$_SESSION['password']=$_POST['password'];
session_registe r($uname,$passw ord);
$result=session _is_registered( $uname);
$result.=sessio n_is_registered ($password);
require("mym.ph p");
$conn=mysql_con nect("localhost ",$user,$pw d)
or die(mysql_error ());
$rs=mysql_selec t_db($database, $conn)
or die(mysql_error ());
$sql="Select * from $table where uname=\"$uname\ " and password=\"$pas sword\" ";
$rs=mysql_query ($sql)
or die(mysql_error ());
$num=mysql_num_ rows($rs)
or die("User Name or Password may be wrong.So Try Again");

if($num!=0)
{
echo("<b>Welcom e you are successfuly logged in $uname</b>");
if(!isset($_SES SION['password']))
{
$msg = "Your session is expired.Please re enter the password";
header("Locatio n: HomePage.php?ms g=".$msg);
}
else {
// remaining code to display the form
}
{ ?>

[michaelb]

Could you check on the version of PHP you're running?
The cache_expire manual should give you an idea whether this function is available with your version.

You could also try function_exists

[jadoo]

Hai,
Thanks for your responce,when i try function_exists it gives the following result:

functions are not available.

so what i should do to use session with time limit.Please help.

[michaelb]

According to the documentation function_exists should return a boolean.
I wonder if there's something wrong with your PHP installation.
Let's try to execute phpinfo() and post the result here.

[jadoo]

According to the documentation function_exists should return a boolean.
I wonder if there's something wrong with your PHP installation.
Let's try to execute phpinfo() and post the result here.

u r right it return boolean value .it echo that msg because of following code.

<?
if (function_exist s('session_cach e_expire')) {
echo " functions are available.<br />\n";
} else {
echo " functions are not available.<br />\n";
}
session_cache_e xpire(15);
$cache_expire = session_cache_e xpire();
session_start() ;
?>


i dont know how should i use session in my script.Actualy iwant that my forms r expired in 15 minuts after loging user.so what i should do?

[jadoo]

u r right it return boolean value .it echo that msg because of following code.

<?
if (function_exist s('session_cach e_expire')) {
echo " functions are available.<br />\n";
} else {
echo " functions are not available.<br />\n";
}
session_cache_e xpire(15);
$cache_expire = session_cache_e xpire();
session_start() ;
?>


i dont know how should i use session in my script.Actualy iwant that my forms r expired in 15 minuts after loging user.so what i should do?

No one give me responce for my problem .what u all doing.Please tell me how can i send new problem