How can PHP beginners avoid common pitfalls when working with arrays and form data in PHP scripts?

One common pitfall for PHP beginners when working with arrays and form data is not properly sanitizing user input, which can lead to security vulnerabilities like SQL injection attacks. To avoid this, always use functions like `htmlspecialchars()` or `mysqli_real_escape_string()` to sanitize user input before using it in your PHP scripts. 

// Example of sanitizing user input before using it
$user_input = $_POST['user_input'];
$sanitized_input = mysqli_real_escape_string($connection, $user_input);
// Now you can safely use $sanitized_input in your SQL queries

Keywords

PHP arrays form data validation error handling

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