How can PHP handle user-specific data in a stock market simulation to ensure fair and accurate results?

To handle user-specific data in a stock market simulation, PHP can use session variables to store unique user information such as account balance, portfolio holdings, and transaction history. By storing this data in session variables, PHP can ensure that each user's data is kept separate and accurate throughout the simulation. 

<?php
session_start();

// Check if user is logged in
if(isset($_SESSION['user_id'])){
    // Retrieve user-specific data from database
    $user_id = $_SESSION['user_id'];
    
    // Query database for user's account balance, portfolio holdings, and transaction history
    // Store retrieved data in session variables for easy access throughout the simulation
} else {
    // Redirect user to login page if not logged in
    header("Location: login.php");
    exit();
}
?>

Keywords

PHP user-specific data stock market simulation fair results accurate results

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