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

Using GET parameters in PHP can pose security risks such as SQL injection attacks or cross-site scripting (XSS) vulnerabilities if the input is not properly sanitized. To mitigate these risks, it is important to validate and sanitize user input before using it in your code. This can be done by using functions like htmlspecialchars() or mysqli_real_escape_string() to prevent malicious code from being executed. 

// Sanitize input from GET parameter
$user_input = isset($_GET['user_input']) ? htmlspecialchars($_GET['user_input']) : '';

// Use the sanitized input in your code
echo "User input: " . $user_input;

Keywords

SQL injection Cross-site scripting (XSS) Data validation Parameter tampering Session hijacking

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