php code to run as localhost is run code example
Example 1: run php server
cd path/to/your/app
php -S localhost:8000
Example 2: php server
cd path/to/your/app
php -S 127.0.0.1:8000
cd path/to/your/app
php -S localhost:8000
cd path/to/your/app
php -S 127.0.0.1:8000