Email addresses can contain unicode nowadays

[yeahfree]

• Laravel Version: 5.5.*
• PHP Version: 7.1 and higher
• Database Driver & Version: Not applicable

Description:

The email validation is slightly outdated. From PHP 7.1 and the fact that modern domain names can use various unicode nowadays (eg. http://müller.com/), the email validation ought to be updated. The email validation functionality can be found at /src/Illuminate/Validation/Concerns/ValidatesAttributes.php and the function is validateEmail(). Other relevant information can be found at:
https://secure.php.net/manual/en/filter.filters.validate.php (at the row with FILTER_VALIDATE_EMAIL)
http://php.net/manual/en/filter.constants.php (at the bottom at FILTER_FLAG_EMAIL_UNICODE)

Steps To Reproduce:

Creating a Validator with an email rule and then pass "test@müller.com" into it.

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Thank you for your time, if you need any more information, please don't hesitate to ask. I tried implementing it quickly myself by adding the flag to the filter_var (, but that did not seem to do the trick so far :( I will in the meanwhile implement it for my project as a custom validation rule (see: https://laravel.com/docs/5.4/validation#custom-validation-rules )

[tillkruss]

Could you post how you're using FILTER_FLAG_EMAIL_UNICODE?

[cwang22]

the documentation says its only for the local part

FILTER_FLAG_EMAIL_UNICODE (integer)
Accepts Unicode characters in the local part in "validate_email" filter. (Available as of PHP 7.1.0)

so simply passing it as a flag to filter_var will not work for test@müller.com

there's library support this like egulias/EmailValidator

This can be optional for user to choose if they want it