# php > PHP command-line interface. > More information: . - Parse and execute a PHP script: `php {{path/to/file}}` - Check syntax on (i.e. lint) a PHP script: `php -l {{path/to/file}}` - Run PHP interactively: `php -a` - Run PHP code (Notes: Don't use tags; escape double quotes with backslash): `php -r "{{code}}"` - Start a PHP built-in web server in the current directory: `php -S {{host:port}}` - Get a list of installed PHP extensions: `php -m` - Display information about the current PHP configuration: `php -i` - Display information about a specific function: `php --rf {{function_name}}`