How can session variables in PHP impact the functionality of class methods like buildOverview()?

Session variables in PHP can impact the functionality of class methods like buildOverview() if the session variables are used within the method to retrieve or set data. To ensure that the method works correctly, make sure to properly handle session variables within the method by checking if they are set and handling any potential errors or exceptions that may arise from using session variables. 

class Overview {
    public function buildOverview() {
        session_start();
        
        if(isset($_SESSION['data'])) {
            // Use $_SESSION['data'] to build the overview
            $overviewData = $_SESSION['data'];
            // Rest of the method logic
        } else {
            // Handle case where session data is not set
            echo "Session data not found";
        }
    }
}

Keywords

session variables PHP class methods buildOverview() functionality

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