# php > PHP command-line interface. > More information: . - Parse and execute a PHP script: `php {{path/to/file}}` - Check syntax on (i.e. [l]int) a PHP script: `php {{[-l|--syntax-check]}} {{path/to/file}}` - Run PHP inter[a]ctively: `php {{[-a|--interactive]}}` - Run PHP code (Notes: Don't use tags; escape double quotes with backslash): `php {{[-r|--run]}} "{{code}}"` - Start a PHP built-in web [S]erver in the current directory: `php {{[-S|--server]}} {{host:port}}` - List installed PHP extensions: `php {{[-m|--modules]}}` - Display information about the current PHP configuration: `php {{[-i|--info]}}` - Display information about a specific function: `php {{[--rf|--rfunction]}} {{function_name}}`