How to check session set?

[SUNIL16]

Hi Friends, I am doing one forum. for that  i created registration and now i want to check whether the session is set or not because only registered members can post topic

below is code i am using for session register

<?php
session_start();

$sql = "SELECT * FROM `register` WHERE `username`='$username' and `password`='$password'";
$result = mysql_query($sql) or die("Could not run the query: ".mysql_error());

$count = mysql_num_rows($result);

if($count == 1) {
$_SESSION["myusername"] = $username;
$_SESSION["mypassword"] = $password; 
include("sucess.php");
} else {
echo "There is no one by that username.";
}
?>

if session is set and he is member he can post topic.

[NathanLedet]

if (isset($_SESSION["myusername"])){

 

}

 

by glimpsing at your code tho, It does appear that you're setting the session before validating that their username and password 1) exists and 2) is valid. 

[waynew]

No ??? I think he's done that with mysql_num_rows function. IF == 1, means that they exist and they're correct.

[waynew]

Why are you putting their password in the session?

[Tandem]

No ??? I think he's done that with mysql_num_rows function. IF == 1, means that they exist and they're correct.

 

All that's doing is making sure that the persons login details are correct, not if they are actually logged in.

 

NathanLedet's solution is correct, i believe.

[waynew]

Well isn't that kind of stating the obvious? You're not going be checking to see if a session is correct on the registration process.

[Tandem]

Oops, missread what you were saying, my apologies.