# phpstorm > A cross-platform IDE for PHP based on the JetBrains IntelliJ platform. > More information: . - Open a specific directory: `phpstorm {{path/to/directory}}` - Open a file: `phpstorm {{path/to/file}}` - Open a file at a specific line: `phpstorm --line {{line_number}} {{path/to/file}}` - View the differences between two files: `phpstorm diff {{path/to/left_file}} {{path/to/right_file}}`