How can PHP developers prevent SQL injection vulnerabilities when interacting with databases?

To prevent SQL injection vulnerabilities when interacting with databases in PHP, developers should use prepared statements and parameterized queries. This helps to separate SQL logic from user input, preventing malicious SQL code from being injected into 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 prepared statements parameterized queries PDO mysqli

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