Bangladeshi Mobile Number's Regular Expressions
(^(+88|0088)?(01){1}[3456789]{1}(\d){8})$
Email Id's Regular Expressions
^([\w.-]+)@([\w-]+)((.(\w){2,3})+)$
Minimum eight characters, at least one uppercase letter, one lowercase letter and one number
^(?=.[a-z])(?=.[A-Z])(?=.*\d)[a-zA-Z\d]{8,}$