how to run a php program code example

Example 1: run php server

cd path/to/your/app
php -S localhost:8000

Example 2: run a php site

php -S 127.0.0.1:8000

Example 3: how to execute a php script from the command line?

To execute a php script, use the PHP Command Line interface(CLI) and specify the file name of the script in the following way:
php script.php