What are the potential issues with using $_GET to retrieve parameters in PHP?

One potential issue with using $_GET to retrieve parameters in PHP is the vulnerability to security risks such as SQL injection attacks. To mitigate this risk, it is recommended to sanitize and validate the input data before using it in your application. 

// Sanitize and validate input data retrieved using $_GET
$param = isset($_GET['param']) ? htmlspecialchars($_GET['param']) : '';
// Use $param in your application logic

Keywords

$_GET security vulnerabilities SQL injection cross-site scripting data validation

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