How can PHP developers prevent security vulnerabilities like the one mentioned in the heise.de article?

To prevent security vulnerabilities like the one mentioned in the heise.de article, PHP developers should sanitize user input to prevent SQL injection attacks. This can be done by using prepared statements with parameterized queries rather than directly concatenating user input into SQL queries. 

// Using prepared statements to prevent SQL injection
$stmt = $pdo->prepare('SELECT * FROM users WHERE username = :username');
$stmt->bindParam(':username', $username);
$stmt->execute();

Keywords

SQL injection cross-site scripting input validation secure coding practices web application firewall

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