Fixing 'Call to Undefined Function' Filter_Var() in PHP
PHP Filters are used to sanitize data coming from outside world inside your application.
RIPS Technologies 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
How to validate email url in php - php filter_var function - YouTube