What are the best practices for handling and storing IP addresses in PHP applications to comply with data protection regulations?

To comply with data protection regulations, it is important to handle and store IP addresses securely in PHP applications. One best practice is to hash the IP address before storing it in the database to protect the user's privacy. Additionally, limit the access to the stored IP addresses to only authorized personnel to prevent unauthorized access. 

// Hashing the IP address before storing it in the database
$ip = $_SERVER['REMOTE_ADDR'];
$hashed_ip = hash('sha256', $ip);

// Storing the hashed IP address in the database
$stmt = $pdo->prepare("INSERT INTO ip_addresses (hashed_ip) VALUES (:hashed_ip)");
$stmt->bindParam(':hashed_ip', $hashed_ip);
$stmt->execute();

Keywords

IP addresses data protection regulations handling storing PHP applications

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