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

Thomas Morling
Thomas Morling
12,754 Points

Stumped Where do I begin? Setting Session Variables Challenge

Stumped Where do I begin? Setting Session Variables Challenge

story.php
<?php
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]);

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';

You're very welcome!

2 Answers

The first thing you need to do is see if the session word array has a value for each index (1 through 5)

<?php
session_start();

if ( ! isset($_SESSION['word'][1]))
{
  header("location: play.php?p=1");
}
if ( ! isset($_SESSION['word'][2]))
{
  header("location: play.php?p=2");
}
if ( ! isset($_SESSION['word'][3]))
{
  header("location: play.php?p=3");
}
if ( ! isset($_SESSION['word'][4]))
{
  header("location: play.php?p=4");
}
if ( ! isset($_SESSION['word'][5]))
{
  header("location: play.php?p=5");
}

// ... Challenge code continues below

Or a cleaner way to approach the problem:

<?php
session_start();

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

// ... Challenge code continues below

This works well enough and also limits duplicating code!

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