Validating Web Forms

First name must be alphanumeric and contain 3 - 16 characters
Last name must be alphanumeric and contain 3 - 16 characters
Email must be a valid address, e. g. example@example.com
Password must be alphanumeric (@, _ and - are also allowed) and between 6 - 20 characters
A valid Telephone number (11 digits and 333-333-3334 )
Bio must contain only lowercase letters, underscores, hyphens and be 8 - 50 characters