difference between myusername and username

[Zoroaster]

I've viewed so many different tutorials etc. and made so many codes that I actually now don't understand some of my code. Please do take a look:

 

<?php

session_start();
if(!session_is_registered(myusername)) {
header("location:index.php");
}

 

The thing that confuses me is "myusername" Where the hell is it coming from? I can't remember why I put it there when I first did. And now it's confusing me to pieces! It's nothing in the database, it's not a variable, and it's not the name of some html stuff either. So what is it??

 

Thanks guys.

[trq]

That piece of code is redundant anyway, session_is_registered is deprecated.

 

Oh, but for it to have been valid (when it was still in use), session_is_registered expects a string.

 

if(!session_is_registered('myusername')) {

[Zoroaster]

That piece of code is redundant anyway, session_is_registred is deprecated.

 

I'm not a very good php programmer, so can you tell me what that means?

[trq]

That piece of code is redundant anyway, session_is_registred is deprecated.

 

I'm not a very good php programmer, so can you tell me what that means?

 

It means its no longer in use. Its old code.

[ignace]

myusername is nothing probably some code from some tutorial where it made sense. And like thorpe said it's deprecated use:

 

session_start();
if (!isset($_SESSION['myusername'])) {
    $_SESSION['myusername'] = $username;
}

 

Edit: deprecated means it is no longer supported and will be removed in a future version.

 

Wikipedia puts it in this way:

the term deprecation is applied to software features that are superseded and should be avoided.

[Zoroaster]

So is "myusername" something I have specified?if so where? Cos I've tried editing it to 'username' but that doesn't work... For some reason it has to be "myusername"

[Kryllster]

Here is what I use for my login script hope it helps $username comes from the database

 

<?php 
session_start();
$_SESSION['username'] = $username;
?>

 

mysuername just probably comes from a tutorial or something where you may have copied and pasted just find out what they are supposed to log in under or what have you or define myusernam.

[waynewex]

Firstly; a quote from PHP.net

 

This function has been DEPRECATED as of PHP 5.3.0 and REMOVED as of PHP 6.0.0. Relying on this feature is highly discouraged.

 

It should be done like so:

 

session_start();
if(!isset($_SESSION['myusername'])) {
      header("location:index.php");
}

 

Check the part of your script where you log a user in... If you're not setting it there, then you've made a typo or something.

[trq]

So is "myusername" something I have specified?if so where? Cos I've tried editing it to 'username' but that doesn't work... For some reason it has to be "myusername"

 

Yes, and how should we know.

 

It means that you have likely registered an index of 'myusername' within the $_SERSSION array somewhere.

[Zoroaster]

So even though "myusername" was specified in a DIFFERENT php file it still finds it? I certainly havent specified "myusername" in the php file i took the code out from. It's just the code I paste in to make users not be able to go to the pages if they are not logged in.

[waynewex]

SESSION variables can be accessed from page to page as long as you have session_start(); at the top of each page. So that myusername variable could have been (and probably was) set on another page. Most likely in your login script.

[trq]

You need to take a look at what sessions are.

[Zoroaster]

Ok, I checked my checklogin.php file and I found this:

 

$count = mysql_num_rows($result);

if($count==1){
session_register("myusername");
session_register("mypassword");
header("location:login_success.php");
}

 

Is that where I specified it?

[waynewex]

Yes:

 

But change it to this:

 

$count = mysql_num_rows($result);

if($count==1){
    $_SESSION['myusername'] = true;
    $_SESSION['mypassword'] = true;
    header("location:login_success.php");
}

 

[trq]

Yes. However, session_register is also deprecated.

 

I'm not sure when your wrote this code or where your learning php from, but its out of date.

 

 

[waynewex]

Also; please note that you're not actually giving the session variable "myusername" any value. You're just setting it as a variable. To give it the actual username of the user, you'll have to take the username out of the result set you got from MySQL and hand the username over to $_SESSION['myusername']

[Zoroaster]

<?




$host = "localhost";
$username = "zoroaste";
$password = "****";
$db_name = "zoroaste_test1";
$tbl_name = "Login";

mysql_connect($host, $username, $password) or die("Failed to connect to mysql!");
mysql_select_db($db_name) or die ("Failed to connect to mysql!");

$myusername = $_POST['myusername'];
$mypassword = $_POST['mypassword'];

$sql = "SELECT * FROM $tbl_name WHERE username='$myusername' and password='$mypassword'";
$result = mysql_query($sql);

$count = mysql_num_rows($result);

if($count==1){
session_register("myusername");
session_register("mypassword");
header("location:login_success.php");
}
else {
echo "Wrong Username or Password";
}
?>

 

Alright this is the whole checklogin.php file. I'm still confused. Where am I specifying myusername and what am i specifying it to? I know that it's deprecated, but lets just look away from that.

 

I'm trying to make a list of all the registered members post itself on the site. And this is confusing me. I can only manage to make it show the user you're logged in to.