PHP Filters are used to sanitize data coming from outside world inside your application.
Creating a Search Filter Function using PHP/PDO | Free Source Code Projects and Tutorials
SOLVED] Add new fields to Admin > Order list > Filter by user email - OpenCart Community
Email Address Format, PHP filter_var Function And RFC 5321 - DEV Community
Validate Email in PHP using FILTER_VALIDATE_EMAIL - YouTube
PHP - Filter And Display Data By Weekly | Free Source Code Projects and Tutorials
Afterlogic WebMail Lite PHP
FILTERS IN PHP | Coding Tag
PHP filter
GitHub - elliotjreed/disposable-emails-filter-php: A PHP package for determining whether an email address is from a disposable / temporary email address provider.
How to Create PHP Contact Form With MySQL & HTML5 Validation
PHP Validate Email using filter_validate_email and regex - Phppot
PHP array_filter() function
PHP Form Validation via Filter Regular Expression Tutorial | Robert James Metcalfe Blog
Gmail Email Inbox using PHP with IMAP - Phppot
Email Validation in PHP Free Source code and Tutorial - iNetTutor.com
Sonar Research on Twitter: "Be careful when using filter_var() for validating user input. Can you spot the vulnerability? #PHP #coding #codechallenge https://t.co/NM8r7DLl0k" / Twitter
Verify Email Address and Check if Email is Real using PHP - CodexWorld
What is PHP Filter | How to Use PHP Filter | PHP Filter List