symfony/dotenv
Dotenv
This library is a PHP environment variable loader and configuration parser. It extracts key-value pairs from local text files to populate global server and system environment arrays, ensuring that sensitive credentials and application settings remain separate from the source code.
The tool implements twelve-factor app configuration principles by mapping local files to process-level variables. It utilizes a regex-based parser to identify variable assignments while stripping comments and whitespace, and it includes guards to prevent local configuration files from overwriting existing host-level system variables.
The project covers environment configuration management, local development setup, and application security by injecting configuration settings directly into the process memory space for global access during runtime.
Features
- Dotenv Loaders - Provides a utility to load environment variables from local configuration files into the process environment.
- Environment File Loaders - Loads key-value pairs from .env files to configure application runtime behavior.
- Environment Variable Loaders - Parses local configuration files to populate global environment variables for application runtime settings.
- Runtime Environment Variable Injections - Injects parsed configuration values into the system environment and superglobals for global runtime access.
- Environment Configuration Management - Manages application behavior by loading key-value pairs from local files into global environment arrays.
- PHP Environment Managers - Manages application-specific environment settings in PHP projects using standard configuration file formats.
- Secrets Management - Protects sensitive credentials and API keys by preventing them from being hardcoded into the source code.
- Environment Variable Management - Provides a system for loading and managing runtime environment variables as the primary configuration source.
- Environment Variable Injection - Injects operating system environment variables from local configuration files into the application runtime.
- Process Environment Injections - Writes parsed configuration values directly into the process environment memory space for global access.
- Environment Variable-Based Configuration - Configures the application by parsing environment files and populating server and system superglobals.
- Twelve-Factor App Implementations - Implements the Twelve-Factor App methodology by storing application configuration in the environment.
- Immutable Variable Enforcement - Prevents the reassignment of existing system environment variables to ensure host-level settings are preserved.
- Environment Variable Protection Policies - Implements policies that prevent local configuration files from overwriting existing system environment variables.
- Configuration File Parsers - Uses a regex-based parser to extract structured configuration data from raw text files.
- Environment Variable Mappings - Maps local text files to process-level variables to separate sensitive credentials from the source code.
- Regular Expression-Based Parsing - Uses regular expression patterns to identify variable assignments and strip comments from configuration files.
- Configuration - Loads environment variables from .env files.
