What are the limitations of using MD5 passwords in PHP applications, and how can developers work around these limitations for better security?

Using MD5 passwords in PHP applications is not secure because MD5 is a fast hashing algorithm that is vulnerable to brute force attacks. Developers can improve security by using stronger hashing algorithms like bcrypt or Argon2 for password hashing.

// Using bcrypt for password hashing
$password = "password123";
$hashed_password = password_hash($password, PASSWORD_BCRYPT);