Is it safe to use sha1(md5($password)) and does it make any difference?

Question

Can I use sha1(md5($password)) for better password hashing, and will it be harder to hack? Or will the security of the hash be the same?

Answer 1

Using multiple hash is bad practice, you should always use the password_hash php function to hash your passwords :)

See http://php.net/manual/en/function.password-hash.php