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

Posted by Andrew mwendo
Andrew mwendo
5,712 Points

please help Check that each of the required session variables are not set before attempting to write the stor

Challenge Task 1 of 2

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.

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';

6 Answers

Ivan Bagaric
Ivan Bagaric
Courses Plus Student 12,356 Points

Something like this maybe

for ($i = 1; $i <= 5; $i++) {
  $tmp = trim($_SESSION['word'][$i]);
  if (empty($tmp)) {
    if ($i == 1) {
      header('location:play.php');
      exit;
    } else {
      header('location:play.php?p='.$i);
      exit;
    }
  }
}
Andrew mwendo
Andrew mwendo
5,712 Points

you are the best

Ivan Bagaric
PLUS
Ivan Bagaric
Courses Plus Student 12,356 Points
Ivan Bagaric
Ivan Bagaric
Courses Plus Student 12,356 Points 
for ($i = 1; $i <= 5; $i++) {
  if (!isset($_SESSION['word'][$i])) {
    if ($i == 1) {
      header('location:play.php');
      exit;
    } else {
      header('location:play.php?p='.$i);
      exit;
    }
  }
}
Andrew mwendo
Andrew mwendo
5,712 Points

how do I continue to the next challenge with the same code

Jeremy Antoine
Jeremy Antoine
15,785 Points
Jeremy Antoine
Jeremy Antoine
15,785 Points

This answer only applies to the first part of the challenge. No else statement required for this step of the challenge.

for ($word =1; $word <=5; $word++) {
  if(!isset($_SESSION['word'][$word])) {
    header('location:play.php?p=' . $word);
    exit;
  }
}
Prince Mandaza
Prince Mandaza
2,943 Points
Prince Mandaza
Prince Mandaza
2,943 Points

<?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]);

for ($i = 1; $i <= 5; $i++) { $tmp = trim($_SESSION['word'][$i]); if (empty($tmp)) { if ($i == 1) { header('location:play.php'); exit; } else { header('location:play.php?p='.$i); 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';

Mohammed Abdelhadi
Mohammed Abdelhadi
17,331 Points
Mohammed Abdelhadi
Mohammed Abdelhadi
17,331 Points

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

Craig Maclean
Craig Maclean
2,051 Points
Craig Maclean
Craig Maclean
2,051 Points

This was my code which worked:

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