: Avoid any script using md5() or sha1() . A modern, helpful script must use password_hash() and password_verify() .
: Never use a script that saves passwords as raw text.
Based on developer feedback and security standards, here are the two most common ways to implement this: Source : W3Schools or PHP The Right Way .
: Higher learning curve if you only need a single feature. Common Pitfalls to Avoid
: To prevent SQL injection, the script should use PDO or MySQLi with prepared statements.
: Ensure the script starts with session_start() and checks if the user is actually logged in before processing the change.