Are there any common pitfalls to avoid when setting up a newsletter email system using PHP?

One common pitfall to avoid when setting up a newsletter email system using PHP is not properly sanitizing user input, which can leave your system vulnerable to SQL injection attacks. To solve this issue, always use prepared statements when interacting with your database to prevent malicious code from being executed. 

// Connect to the database
$pdo = new PDO("mysql:host=localhost;dbname=newsletter", "username", "password");

// Prepare a statement to insert user input into the database
$stmt = $pdo->prepare("INSERT INTO subscribers (email) VALUES (:email)");

// Bind the user input to the prepared statement
$stmt->bindParam(':email', $_POST['email']);

// Execute the statement
$stmt->execute();

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PHP newsletter email system pitfalls setup

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