The Email validates whether the value is a valid e-mail address. Actual validation uses filter_var() The validation
is performed against the addr-spec syntax in » RFC 822. However, comments,
whitespace folding, and dotless domain names are not supported, and thus will be rejected.
[1]
Warning!
Email validation is complex and the only true way to confirm an email
is valid and exists is to send an email to the address.[1]
The Url validates whether the value is a valid URL. Actual validation uses filter_var() with . It validates whether the URL name is valid according to » RFC 2396.
[2]
Warnings:
A valid URL may not specify the HTTP protocol (http://). Therefore, further
validation may be required to determine if the URL uses an expected protocol, e.g. ssh:// or mailto:.
[2]
This filter only works on ASCII URLs. This means that Internationalized Domain
Names (IDN) will always be rejected.
[2]
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