^(/|http://|https://)
Start with / or http
^(http|https):\/\/((?!domain.com).)*$
This is for redirecting to EXTERNAL websites ONLY!!! Do not use this to redirect to pages or files within your own site. This field must start with http(s):// and NOT contain domain.com
^[\s\S]{0,200}$
MAX = 200 characters
^[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,6}$
Email
^[^&'"]*$
Do not allow &, ', or "
^[0-9\.]*$
Allow only #'s or .
(^[0-9\.]*$)
Allow only #'s, ., or empty
^[a-zA-Z0-9|\s|,]*$
Alphanumeric characters ONLY