What security risks are associated with using GET parameters directly in PHP, as seen in the forum thread?

Using GET parameters directly in PHP can expose your application to security risks such as SQL injection attacks and cross-site scripting (XSS) attacks. To mitigate these risks, it is important to properly sanitize and validate any user input before using it in your application. 

// Sanitize and validate GET parameters before using them
$param1 = isset($_GET['param1']) ? filter_var($_GET['param1'], FILTER_SANITIZE_STRING) : '';
$param2 = isset($_GET['param2']) ? filter_var($_GET['param2'], FILTER_SANITIZE_STRING) : '';

Keywords

SQL injection cross-site scripting data validation input sanitization URL encoding

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