PHP - Retrieving Session ID from the Current Session in PHP

Retrieving Session ID from the Current Session in PHP

Q

How To Retrieve the Session ID of the Current Session in PHP?

✍: FYIcenter.com

A

Normally, you don't need to know the session ID of the current session. But if you are interested to know the session ID created by the PHP engine, there are two ways to get it:

Calling session() function. It will return the session ID value.
Using built-in constant SID. It will contains a string of session ID name and value.

The tutorial PHP script below shows you how to retrieve the session ID in two ways:

<?php
  session_start();
  print("<html><pre>");

  $sid = session_id();
  print("Session ID returned by session_id(): ".$sid."\n");
  $sid = SID;
  print("Session ID returned by SID: ".$sid."\n");

  $myLogin = $_SESSION["MyLogin"];
  print("Value of MyLogin has been retrieved: ".$myLogin."\n");
  $myColor = $_SESSION["MyColor"];
  print("Value of MyColor has been retrieved: ".$myColor."\n");

  print("</pre></html>\n");
?>

You need to save this script to your Web server as next_page.php. Now visit first_page.php and click the "Next Page" hyper like, you will get something like this:

Session ID returned by session_id(): rfnq17ui6c7g6pjbtc46n0vi97
Session ID returned by SID: PHPSESSID=rfnq17ui6c7g6pjbtc46n0vi97
Value of MyLogin has been retrieved: FYICenter
Value of MyColor has been retrieved: Blue

Now you know that the session ID created by the PHP engine is 26 characters long with alphanumeric characters only.

⇒Understanding and Using Sessions in PHP

⇒⇒PHP Tutorials

2016-10-26, 476👍, 0💬

How Sessoion IDs Are Transferred in PHP
How Session IDs Are Transferred on Your Web Server in PHP? As you know there are two options the PHP engine can use to transfer session IDs to the client browsers. But how to do know which option is your PHP engine is using? The PHP sample script will help you to find out: <?php session_start... 2016-10-25, 490👍, 0💬

Optoins to Transfer Session IDs in PHP
What Are Options to Transfer Session IDs in PHP? Once a new session is created, its session ID must be transferred to the client browser and included in the next client request, so that the PHP engine can find the same session created by the same visitor. The PHP engine has two options to transfer t... 2016-10-26, 478👍, 0💬

Retrieving Session ID from the Current Session in PHP
How To Retrieve the Session ID of the Current Session in PHP? Normally, you don't need to know the session ID of the current session. But if you are interested to know the session ID created by the PHP engine, there are two ways to get it: Calling session() function. It will return the session ID va... 2016-10-26, 477👍, 0💬

Retrieving Values Stored in Session in PHP
How To Retrieve Values from the Current Session in PHP? If you know some values have been saved in the session by another script requested by the same visitor, you can retrieve those values back by using the pre-defined associative array called $_SESSION. The following PHP script shows you how to re... 2016-10-26, 465👍, 0💬

All rights in the contents of this web site are reserved by the individual author. fyicenter.com does not guarantee the truthfulness, accuracy, or reliability of any contents.