How can cheating by users be prevented effectively when updating properties based on a link click in PHP?

Cheating by users when updating properties based on a link click in PHP can be prevented effectively by implementing server-side validation and verification. One way to achieve this is by using a unique token or identifier in the link that is generated for each user and validating it before updating the properties. 

// Example code snippet to prevent cheating by users when updating properties based on a link click

// Generate a unique token for the user
$token = md5(uniqid(rand(), true));

// Store the token in the session or database for verification later

// Create a link with the token as a parameter
$link = "update_properties.php?token=$token";

// When the link is clicked, verify the token before updating the properties
if(isset($_GET['token'])) {
    $token = $_GET['token'];
    
    // Verify the token against the stored token in the session or database
    if($token === $_SESSION['token']) {
        // Update the properties
        // Add your code here to update the properties
    } else {
        // Token verification failed, handle the error accordingly
    }
}

Keywords

SQL injection CSRF token server-side validation prepared statements session management

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