CODEWITHSUNDEEP
phpsession
maxisme
maxisme

Reputation: 4265

Check to see if PHP session exists not working

I am trying to find a way to check whether there is a session. And if there isn't, redirect back to the start.php page.

These are the pages I have made.

start.php

<form action="form.php" method="post">
    <p>Please enter your name to continue:</p>
    <input type="text" name="name" id="name" />
    <input type="submit" name="enter" id="enter" value="Enter" />
</form>

form.php

Above the head:

<?php session_start(); ?>

In the body:

<?php
if(isset($_POST['enter'])){
    if($_POST['name'] != ""){
        $_SESSION['name'] = stripslashes(htmlspecialchars($_POST['name']));
    }
}
$name = $_SESSION['name'];
echo $name;
?>

Attempt

I have putting this above the head of the form (along with what is there now) but it just keeps me on the start.php page

<?php 
  if (!isset($_SESSION["name"]))
   {
      header("location: start.php");
   }
   else{
   }
?>

more info

So currently if there is no session and I enter form.php it will redirect me to start.php. But if there is a session it will stay on form.php.

But if I start on start.php and submit the form (creating the session and moving to form.php) it will straight away redirect me back to start.php (the same page)?

code of the two pages in full:

start.php

<?php session_start(); ob_start(); ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Untitled Document</title>
<script type="text/javascript" src="http://code.jquery.com/jquery-1.8.2.js"></script>

</head>

<body>


    <form action="deletethis.php" method="post">
        <p>Please enter your name to continue:</p>
        <input type="text" name="name" id="name" />
        <input type="submit" name="enter" id="enter" value="Enter" />
    </form>


</body>
</html>

form.php

<?php 
  session_start();
  if (!isset($_SESSION["name"]))
   {
      //header("location: delete1.php");
      die('<meta http-equiv="refresh" content="0;URL='.'delete1.php'.'" />');
   }
   else{
   }
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Untitled Document</title>
</head>

<body>
<?php
if(isset($_POST['enter'])){
    if($_POST['name'] != ""){
        $_SESSION['name'] = stripslashes(htmlspecialchars($_POST['name']));
    }
}
$name = $_SESSION['name'];
echo $name;
?>
</body>
</html>

What I have decide to do instead

if (strlen($name) <1){
    echo '<script> window.location.replace("delete1.php");</script>';
    }

Upvotes: 0

Views: 770

Answers (1)

Muaaz Khalid
Muaaz Khalid

Reputation: 2249

You need to add

<?php session_start(); ?>

on each page in the very beginning..

So, the code should be like this

<?php 
  session_start();
  if (!isset($_SESSION["name"]))
   {
      //header("location: delete1.php");
      die('<meta http-equiv="refresh" content="0;URL=\'delete1.php\'" />');
   }
   else{
   }
?>

Upvotes: 1

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