Are there any potential conflicts or errors in the PHP code that could be affecting the functionality of the quiz game?

There is a potential issue with the use of the `$_SESSION` variable in the PHP code for the quiz game. It is important to ensure that the `session_start()` function is called at the beginning of the script to initialize the session. This will allow the script to properly store and retrieve session variables like `$_SESSION['score']`. 

<?php
session_start();

// Check if the score session variable is set
if(!isset($_SESSION['score'])) {
    $_SESSION['score'] = 0;
}

// Update the score session variable
$_SESSION['score'] += 1;

// Display the current score
echo "Score: " . $_SESSION['score'];
?>

Keywords

conflicts errors PHP code functionality quiz game

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