What should be the correct login length?

Question

PHP

What to choose the maximum and minimum length of the login? What does choice depend on? What then influences? And a password for one?

Answer 1

Login: 3-20 characters, any characters of the alphabet (selected by the user) of the site language and/or numbers and/or one of the characters: "-" or "_".
Also, you can use E-MAIL for authorization in the login field,
BUT REMEMBER!: E-MAIL != LOGIN
Password: from 8-50 characters, any characters, must contain at least ANY TWO punctuation marks and/or digits.
For example:
Login: Wild_Max, Fox, Turbo-500
Passwords: "soft_342" or "DEMO-927" or "[email protected]" or "[email protected]@[email protected]"
...... fit the requirements.

Answer 2

The length of the login does not affect anything. It must be your favorite.
The length of the password affects your peace of mind. It should be at least 7-8 characters, preferably 10-12. If the password is technical (his computer tells the computer) 16-18.
The password must contain lowercase and uppercase letters, numbers, other keyboard characters (plus, minus, underscore, percentage, pound sign, etc.). The password must not be a common word.
It is best to generate a password with a special program.

Answer 3

the correct guys put the email in the login,
i.e. at least @gmail.com = 10 characters
with a simpler password: at least 8 characters, or, if you stubbornly, at least 13, with capital letters and special characters (this is from practice)

Answer 4

Exactly 9 characters.