What potential issues can arise when passing variables using the GET method in PHP?

One potential issue when passing variables using the GET method in PHP is the increased vulnerability to security threats such as SQL injection attacks. To mitigate this risk, it is important to properly sanitize and validate any user input received through the GET method before using it in database queries or other sensitive operations. 

// Sanitize and validate input received through the GET method
$variable = isset($_GET['variable']) ? htmlspecialchars($_GET['variable']) : '';

// Use the sanitized variable in your code
// For example, using it in a database query
$query = "SELECT * FROM table WHERE column = '" . $variable . "'";

Keywords

GET method variables security vulnerabilities injection attacks URL encoding

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