What are the potential security risks of passing variables through the URL using GET in PHP?

Passing variables through the URL using GET in PHP can pose security risks such as exposing sensitive information, allowing for potential injection attacks, and making it easier for attackers to manipulate data. To mitigate these risks, it is recommended to sanitize and validate any input received through GET requests before using it in your application. 

// Sanitize and validate input received through GET requests
$variable = isset($_GET['variable']) ? filter_var($_GET['variable'], FILTER_SANITIZE_STRING) : '';

// Use the sanitized variable in your application
echo $variable;

Keywords

SQL injection cross-site scripting data manipulation URL parameters security vulnerabilities

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