What are common mistakes made when creating a PHP contact form?

One common mistake when creating a PHP contact form is not properly sanitizing user input, which can leave the form vulnerable to SQL injection attacks. To solve this issue, always use prepared statements or parameterized queries to securely interact with your database. 

// Example of using prepared statements to insert user input into a database
$stmt = $pdo->prepare("INSERT INTO contacts (name, email, message) VALUES (?, ?, ?)");
$stmt->execute([$name, $email, $message]);

Keywords

validation sanitization CSRF SMTP error handling

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