title: md5 hash login with php and mysql
body: <p>I was given an excel file with about 450 username and passwords (the passwords are encoded with MD5 hash)
  How can I put this excel (.xls) file into my MySQL database and on the website (php side) how can I check if the user entered password is the correct password (I know nothing about hashing a password with MD5 or any hash-sequence for that matter)</p>