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PHP Browser Persistent Data with PHP Data Persistence on the Web Reading, Writing and Destroying Sessions

Brenda Krafft
Brenda Krafft
18,036 Points
Posted by Brenda Krafft
Brenda Krafft
18,036 Points

Checking to see if $_Session variables are unset. Course: Browser Persistent Data with PHP

I am getting this error: "When the $_SESSION['word'] array is not set, you should redirect to the play.php page."

Isn't that what I'm doing?

<?php
session_start();
if (!isset($_SESSION['word'])) {
    header('location: play.php');
    exit;
} else {
    //Do other stuff
}

3 Answers

Benjamin Larson
Benjamin Larson
34,055 Points
Benjamin Larson
Benjamin Larson
34,055 Points

Hi Brenda -

You have to check if each of the 5 words have been set and if one of them has not, redirect to play.php?p=, setting p equal to the first word reached that was not set. I wasn't sure the best way to tackle this...I just used a for loop evaluating

$_SESSION['word'][$i], from i=1 to i=5

Let me know if you have other questions, I left my description somewhat vague so as to not simply post the answer.

Rafael Felipe
Rafael Felipe
6,058 Points
Rafael Felipe
Rafael Felipe
6,058 Points

Thanks Benjamin your explanation helped me a lot!

Douglas Palma
Douglas Palma
12,222 Points

Would you mind explaining further? i've tried out a few different answers but I'm in the ballpark just not getting the correct answer.

tinashegondokondo
PLUS
tinashegondokondo
Courses Plus Student 13,579 Points
tinashegondokondo
tinashegondokondo
Courses Plus Student 13,579 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]);

Try using the following (I have not put the full solution):

if (empty($word1)) {
    header('location: play.php?p=1');
}

remember $word1 to $word5; & p=1 to p=5

Magnus Martin
Magnus Martin
44,123 Points
Magnus Martin
Magnus Martin
44,123 Points

Alena's quizzes are a bit more tricky.