# php > PHP Command Line Interface 'CLI' - Parse and execute a file `php {{file}}` - Check syntax (lint) `php -l {{file}}` - Run PHP interactively `php -a` - Run PHP code. Notes: a) Don't use tags; b) Escape double quotes with backslash `php -r "{{code}}"` - Start a PHP built-in web server in the current directory. `php -S {{host:port}}`