How to make up a unique name for a $_SESSION in PHP?

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8 Answers

sessionunique
90%

In most school, home, and office networks your users will be sharing IP addresses since they will be accessing the broader Internet from inside a NAT or through an outbound firewall. Use uniqid() to generate a unique value to associate with each failure. That is not entirely necessary though, because session_id() holds a unique value for each user session already. ,If there is a chance of multiple users sharing the same IP then what is a good way to determine a unique identifier for my session name that will link a non-logged in user to the session?,What is actually happening behind the scenes is that PHP stores a cookie on the browser with a unique id (the session id) which is associated with a data structure stored on the server. None of the actual session data ever leaves the server, apart from that id. It's actually a file, you can see it if you poke around in your php folders. ,Note however, that this can't prevent a user from simply restarting the browser to get a new session. You can add more hoops to jump through, like also logging the user agent, but that can also cause potential conflicts for other users on the same network and can still be spoofed or changed by clever end users to get around your restriction.

All you really need to do to track failures in a session is to increment a variable inside that session.

if (failed_login) {
   $_SESSION['failed_logins']++;
}

$threshold = 5;
if ($_SESSION['failed_logins'] >= $threshold) {
   // Do whatever is needed when too many failures occur
}
88%

session_name — Get and/or set the current session name, session_​name , session_​module_​name , session_​unset

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72%

This is a guide to PHP Create Session. Here we discuss the introduction and how to create a session in PHP using various methods? You may also have a look at the following articles to learn more –,The PHP session file’s directory location is determined with the help of the “php.ini” file, which is called “session.save_path”.,<?php session_start(); //starting the session ?>,Session_start() function will start a new, or it will resume the existing session. To know whether the PHP session is created or not, you have stored at least some little info.

Syntax of starting/creating a session:

<?php
session_start();
//starting the session
?>

< ? php
session_start();
//starting the session
?
>
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65%

Session variables are set with the PHP global variable: $_SESSION.,Create a session variable named "favcolor".,Also notice that all session variable values are stored in the global $_SESSION variable:,To change a session variable, just overwrite it:

session_start();
["favcolor"] = "green";
75%

An alternative way to make data accessible across the various pages of an entire website is to use a PHP Session.,A file is automatically created on the server in the designated temporary directory and bears the name of the unique identifier prefixed by sess_ ie sess_3c7foj34c3jj973hjkop2fc937e3443.,Session variables are stored in associative array called $_SESSION[]. These variables can be accessed during lifetime of a session.,A cookie called PHPSESSID is automatically sent to the user's computer to store unique session identification string.

<?php
   session_start();
   
   if( isset( $_SESSION['counter'] ) ) {
      $_SESSION['counter'] += 1;
   }else {
      $_SESSION['counter'] = 1;
   }
	
   $msg = "You have visited this page ".  $_SESSION['counter'];
   $msg .= "in this session.";
?>

<html>
   
   <head>
      <title>Setting up a PHP session</title>
   </head>
   
   <body>
      <?php  echo ( $msg ); ?>
   </body>
   
</html>
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In this tutorial you will learn how to store certain data on the server on a temporary basis using PHP session.,If you want to remove certain session data, simply unset the corresponding key of the $_SESSION associative array, as shown in the following example:,Tip: The session IDs are randomly generated by the PHP engine which is almost impossible to guess. Furthermore, because the session data is stored on the server, it doesn't have to be sent with every browser request.,Note: To access the session data in the same page there is no need to recreate the session since it has been already started on the top of the page.

< ? php
// Starting session
session_start(); ?
>
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22%

Now that you've seen a brief introduction to how sessions work, we'll create a few practical examples to demonstrate how to create and manipulate session variables.,As we discussed earlier, once a session is started, the $_SESSION super-global array is initialized with the corresponding session information. By default, it’s initialized with a blank array, and you can store more information by using a key-value pair.,We'll start with an explanation of how sessions work and how they are related to cookies. Then we'll look at a few code snippets that demonstrate how to work with sessions. You'll learn how to create and destroy sessions, and how to change session variables.,Let’s go through the following example script that demonstrates how to initialize session variables.

This is the method that you'll see most often, where a session is started by the session_start function.

< ? php
// start a session
session_start();

// manipulate session variables
?
>
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Below is the PHP code to start a new session:,Storing Session Data: Session data in key-value pairs using the $_SESSION[] superglobal array.The stored data can be accessed during lifetime of a session.Below is the PHP code to store a session with two session variables Rollnumber and Name:<?php  session_start();  $_SESSION["Rollnumber"] = "11";$_SESSION["Name"] = "Ajay";  ?>,Below is the PHP code to store a session with two session variables Rollnumber and Name:,Below are different steps involved in PHP sessions:

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