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PHP Browser Persistent Data with PHP Data Persistence on the Web Checking for Sessions

Julien Steel
Julien Steel
10,790 Points
Posted by Julien Steel
Julien Steel
10,790 Points

Redirect to play.php when $_SESSION['word'] is not set. What do I do wrong?

Can somebody please assist me with the following error. Does seems to work in workspaces but not in the exercise.

story.php 
<?php
session_start();
if ( !isset($_SESSION['word'])) {
  header ('location: play.php'); 
  exit;
}
$word1 = htmlspecialchars($_SESSION['word'][1]);
$word2 = htmlspecialchars($_SESSION['word'][2]);
$word3 = htmlspecialchars($_SESSION['word'][3]);
$word4 = htmlspecialchars($_SESSION['word'][4]);
$word5 = htmlspecialchars($_SESSION['word'][5]);

include 'inc/header.php';

echo '<h1>My Treehouse Story</h1>';

echo '<p>There once was a(n) ' . $word1;
echo ' programmer named ' . $word2; 
echo '. </p>';
echo '<p>This ' .  $word3; 
echo ' programmer used Treehouse to learn to ' . $word4;
echo ' the ' . $word5 . '.</p>';

echo ' <a class="btn btn-default btn-lg" href="#" role="button">Save Story</a>';
echo ' <a class="btn btn-default btn-lg" href="play.php" role="button">Play Again</a>';
echo ' <a class="btn btn-default btn-lg" href="index.php" role="button">Other Stories</a>';


include 'inc/footer.php';

2 Answers

Marc Busby
Marc Busby
35,550 Points

Read the question fully, it's asking you:

Check that each of the required session variables are not set before attempting to write the story. If the session variables are not set, redirect to play.php with the p parameter set to the first missing session variable.

So this means you need to create a for loop and loop through the $_session['word'] to see if one is empty. If it's empty then you need to perform the redirect and pass the parameter P = the value of the $_session['word'] that it empty.

Julien Steel
Julien Steel
10,790 Points
Julien Steel
Julien Steel
10,790 Points

Thank you! I had figured it out in the meantime

Ray Knag
Ray Knag
8,110 Points
Ray Knag
Ray Knag
8,110 Points

I am also having an issue with this challenge and have similar code. I am running into a mental block on my lunch break as to how to set up the for loop to pass the p value of the empty session['word']. Just drawing a blank here... Could you guys help me out?

session_start();
$word1 = htmlspecialchars($_SESSION['word'][1]);
$word2 = htmlspecialchars($_SESSION['word'][2]);
$word3 = htmlspecialchars($_SESSION['word'][3]);
$word4 = htmlspecialchars($_SESSION['word'][4]);
$word5 = htmlspecialchars($_SESSION['word'][5]);

if (empty($_SESSION['word'])) {
  header('location: story.php');
  exit;
}

include 'inc/header.php';

echo '<h1>My Treehouse Story</h1>';

echo '<p>There once was a(n) ' . $word1;
echo ' programmer named ' . $word2; 
echo '. </p>';
echo '<p>This ' .  $word3; 
echo ' programmer used Treehouse to learn to ' . $word4;
echo ' the ' . $word5 . '.</p>';

echo ' <a class="btn btn-default btn-lg" href="#" role="button">Save Story</a>';
echo ' <a class="btn btn-default btn-lg" href="play.php" role="button">Play Again</a>';
echo ' <a class="btn btn-default btn-lg" href="index.php" role="button">Other Stories</a>';


include 'inc/footer.php';
?>
Ray Knag
Ray Knag
8,110 Points
Ray Knag
Ray Knag
8,110 Points

Found out what I was doing wrong, did not realize that I had to establish a variable for the page. Turns out the For loop was not too difficult either, I just plain forgot how need to be setup to run through an array.

for ($i = 1; $i <= 5; $i++) {
  if (!isset($_SESSION['word'][$i])) {
    header("location: story.php?p=$i");
    exit;
  }
}