How can PHP developers ensure the security of dynamic SELECT queries in their code?

To ensure the security of dynamic SELECT queries in PHP code, developers should use prepared statements with parameterized queries. This helps prevent SQL injection attacks by separating SQL code from user input. 

// Example of using prepared statement for a dynamic SELECT query
$stmt = $pdo->prepare("SELECT * FROM users WHERE username = :username");
$stmt->bindParam(':username', $username);
$stmt->execute();
$results = $stmt->fetchAll();

Keywords

SQL injection prepared statements PDO mysqli escaping inputs

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