SessionPage*.php - Session Test Script Pages

<< Creating and Managing Sessions in PHP Scripts

<< PHP Tutorials - Herong's Tutorial Examples

This section provides a tutorial example on how to write multiple script pages and use the session concept to make them work together.

To help us testing the session concept, I wrote 3 PHP scripts.

1. SessionPage1.php:

<?php # SessionPage1.php
# Copyright (c) 2002 by Dr. Herong Yang, http://www.herongyang.com/
# 
   session_start();
   $quantity = 3;
   $_SESSION['quantity'] = $quantity;
   if (isset($_SESSION['count'])) {
      $count = $_SESSION['count'];
   } else {
      $count = 0;
   }
   $count++;
   $_SESSION['count'] = $count;
#   
   print "<pre>\n";
   print "\nI am buying $quantity PHP books.\n";
  
   print "\n<a href=SessionPage2.php>Next</a>\n";
   print "\nCounter = $count\n";
   print "Session name = ".session_name()."\n";
   print "Session id = ".session_id()."\n";
# 
   print "\nContents of \$_GET:\n";
   foreach ($_GET as $k => $v) {
      print "   $k = $v\n";
   }
# 
   print "\nContents of \$_POST:\n";
   foreach ($_POST as $k => $v) {
      print "   $k = $v\n";
   }
# 
   print "\nContents of \$_COOKIE:\n";
   foreach ($_COOKIE as $k => $v) {
      print "   $k = $v\n";
   }
   print "</pre>\n";
?>

2. SessionPage2.php:

<?php # SessionPage2.php
# Copyright (c) 2002 by Dr. Herong Yang
# 
   session_start();
   $quantity = $_SESSION['quantity'];
   $price = 9.99;
   $_SESSION['price'] = $price;
   $count = $_SESSION['count'];
   $count++;
   $_SESSION['count'] = $count;
#
   print "<pre>\n";
   print "\nI am buying $quantity PHP books.\n";
   print "The unit price is $price per book.\n";
#
   print "\n<a href=SessionPage3.php>Next</a> ";
   print " <a href=SessionPage1.php>Prev</a>\n";
   print "\nCounter = $count\n";
   print "Session name = ".session_name()."\n";
   print "Session id = ".session_id()."\n";
# 
   print "\nContents of \$_GET:\n";
   foreach ($_GET as $k => $v) {
      print "   $k = $v\n";
   }
# 
   print "\nContents of \$_POST:\n";
   foreach ($_POST as $k => $v) {
      print "   $k = $v\n";
   }
# 
   print "\nContents of \$_COOKIE:\n";
   foreach ($_COOKIE as $k => $v) {
      print "   $k = $v\n";
   }
   print "</pre>\n";
?>

3. SessionPage3.php:

<?php # SessionPage3.php
# Copyright (c) 2002 by Dr. Herong Yang
# 
   session_start();
   $quantity = $_SESSION['quantity'];
   $price = $_SESSION['price'];
   $total = $quantity * $price;
   $count = $_SESSION['count'];
   $count++;
   $_SESSION['count'] = $count;
#
   print "<pre>\n";
   print "\nI am buying $quantity PHP books.\n";
   print "The unit price is $price per book.\n";
   print "The total price is $total.\n";
#
   print "\n<a href=SessionPage2.php>Prev</a>\n";
   print "\nCounter = $count\n";
   print "Session name = ".session_name()."\n";
   print "Session id = ".session_id()."\n";
# 
   print "\nContents of \$_GET:\n";
   foreach ($_GET as $k => $v) {
      print "   $k = $v\n";
   }
# 
   print "\nContents of \$_POST:\n";
   foreach ($_POST as $k => $v) {
      print "   $k = $v\n";
   }
# 
   print "\nContents of \$_COOKIE:\n";
   foreach ($_COOKIE as $k => $v) {
      print "   $k = $v\n";
   }
   print "</pre>\n";
?>

Last update: 2005.

Sections in This Chapter

What Is a Session?

How Sessions Are Support in PHP?

SessionPage*.php - Session Test Script Pages

Running Session Test Script Pages

Managing Session IDs without Cookies

Where Is Session Data Stored?