# phpspec > A Behaviour Driven Development tool for PHP. > More information: . - Create a specification for a class: `phpspec describe {{class_name}}` - Run all specifications in the "spec" directory: `phpspec run` - Run a single specification: `phpspec run {{path/to/class_specification_file}}` - Run specifications using a specific configuration file: `phpspec run {{[-c|--config]}} {{path/to/configuration_file}}` - Run specifications using a specific bootstrap file: `phpspec run {{[-b|--bootstrap]}} {{path/to/bootstrap_file}}` - Disable code generation prompts: `phpspec run --no-code-generation` - Enable fake return values: `phpspec run --fake`