| What is php sessions ? |
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PHP sessions are areas of a web server that we can store information about users on a web site.
We can use sessions to store information like.
Clients Username
Weather the user is login or not
or stor What you like.
We can also use sessions to track the user on your web site so as the user changes from one page to another the user will say loged in.
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| What are php sessions |
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When A new session is assigned to a client they are given an unique string called a session id this string is stored in a cookie on the clients machine. This is what the clients web browser uses to access the session data. So if you think about it, If you have someone elses session id you can trick the server into thinking your loged in as someone else
by changing the session id in your cookies to their session id. |
| Basic Sessions Start |
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session_start(); |
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Sessions are used like any other array well look at the code’s below. |
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Creating a session vairable: |
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session_start();
$_SESSION['session_name'] = "Hello"; |
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Useing the Session Variable |
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session_start();
echo $_SESSION['session_name']; |
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Session Variables can be used on any page of your sever aslong as you use session_start(); to tell the server your going to use Session variables. |
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An example of A SESSION in action
On An earlyer Page the client visited theses sessions where set up (login page)
$_SESSION['user_id'] = 1; <---- user account as a number repsenting that user
$_SESSION['username'] = mofm; <---- thse users username
$_SESSION['email'] = "email@server.com";<----- Users Email
$_SESSION['logedin'] = True; <------ this is set to true is the user has logedin |
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session_start();// Tells server To get ready For session information
if(SESSION['logedin'] == True) //If user is loged in change $username to the username stored in the sessions
{
$username = $_SESSION['username']." ";
}
else
{
$username = "Guest "; // if not logedin change $username to guest
}
echo "Welcome To the Site " .$username;
echo "<A HREF='mailto:" .$_SESSION['email']." >Your Email</A>"; |
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This code can be improved and thir is a problem with it, If u understood anything from the tutorial you will be able to fix it |
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