IsValidEmail (String)
| Author: | bjoern |
| Date: | 14 Feb, 2012 |
| Category: | plugin |
| Credits: |
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IsValidEmail (String)
Description
Verifies that strings are in valid e-mail format.
Comments
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hey bjoern, thank you for the contrib! may i suggest 2 improovements? 1/ validate via root zones http://www.iana.org/domains/root/db/ (avoid locals, but only classic latin), since test@domainname.rus marked now as valid but it's not test@domainname.ru is valid 2/ let more flexible names e.g. (_@domainname.com) now marked as not valid, but it is. i know, google not let to use signs, but some other services do, so _ and - sings should be welcome in the plug filters.
To be honest I merely copied the code found here and pasted it into a string-plugin-template.
The code uses a regular expression to parse the input and check if it adheres to a certain form/syntax. Nothing is really validated, "rus" just matches the pattern like "com" or "net" do. The regex only tests if the TLD part consists of at least of two and a maximum of 17 characters.
So the plugin is not named very aptly and maybe should rather be called IsWellformedEmail (String).
Concerning underscores, as far as I know they are allowed in mail-addresses, just not at the beginning of the string, therefore t_st@domainname.net is marked valid (wellformed) whereas _st@domainnam.net is not.