What are common pitfalls when using tables in PHP for web development?

One common pitfall when using tables in PHP for web development is not properly sanitizing user input, which can lead to SQL injection attacks. To prevent this, always use prepared statements when interacting with a database to ensure that user input is properly escaped. 

// Example of using prepared statements to prevent SQL injection

// Assuming $conn is a valid database connection

$stmt = $conn->prepare("SELECT * FROM users WHERE username = ?");
$stmt->bind_param("s", $username);

$username = $_POST['username'];
$stmt->execute();
$result = $stmt->get_result();

while ($row = $result->fetch_assoc()) {
    // Process results
}

$stmt->close();
$conn->close();

Keywords

SQL injection XSS attacks data validation PDO prepared statements

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