Handling Odd Behavior of PHP's `filter_var` with FILTER_VALIDATE_EMAIL in PHP 8.2
I'm trying to figure out I've spent hours debugging this and I'm attempting to set up I tried several approaches but none seem to work..... I'm experiencing unexpected behavior when using `filter_var` with `FILTER_VALIDATE_EMAIL` in PHP 8.2. I have a form where users enter their email addresses, and I validate them before processing. However, certain valid-looking email formats are being flagged as invalid. For instance: ```php $email1 = 'user.name+tag@gmail.com'; $email2 = 'user@subdomain.example.com'; $email3 = 'user@domain.co.uk'; $emails = [$email1, $email2, $email3]; foreach ($emails as $email) { if (!filter_var($email, FILTER_VALIDATE_EMAIL)) { echo "$email is invalid\n"; } else { echo "$email is valid\n"; } } ``` The output I get is: ``` user.name+tag@gmail.com is valid user@subdomain.example.com is valid user@domain.co.uk is invalid ``` I need to understand why the last email address is flagged as invalid since it follows the standard email format. I've double-checked my PHP configuration, and it seems that all extensions are correctly enabled. I also tried variations of the email format, but the same email keeps failing validation. Is there a known scenario with `filter_var` in PHP 8.2 or perhaps some configuration that I might be overlooking? Any insights or suggestions would be greatly appreciated! This is my first time working with Php 3.11. Thanks, I really appreciate it! Any feedback is welcome! Any pointers in the right direction? The project is a mobile app built with Php.