I crafted a Regular Expression for Sri Lankan phone numbers before, and here is one to validate Sri Lankan National Identify Card numbers.
Here is a quick regex to validate Sri Lankan phone numbers.
PHP 7.3 is now officially released, and it comes with support for SameSite cookie flag!
Upgrade guide for PHP 7.3 on Ubuntu and Debian.
Enable TLS 1.3 on Apache. No need to compile Apache yourself
How to enable TLS 1.3 in Nginx and Apache
Secure Password Hashing with BCrypt and Argon2 for WordPress