Fields control

This is a simple list of controls that you have to do when you are developing a registration/login form in you application or website.

User registration

• Check for empty fields.
• Check for trim.
• Check for double spaces.
• Check if the email is valid.
• Check for the password length.
• Check if the password has numbers and special chars.
• Check if the confirmation password matches.
• Check if the inserted birth date has a valid pattern.
• Check user age.
• Check if data has the right length.
• Check if the email already exists into the database.
• Data formatting:
  • Capitalize first letter of name and surname and strlower the other letters.
  • Lower case email.
• Hash password and save user into the database.

User login

• Check for empty fields.
• Check if the email is valid.
• Check if email and password length is right.
• Data formatting:
  • Lower case email.
• Check if credentials are valid.
• If credentials are valid:
  • Update database user last access.
  • Create user session or cookie.