vlucas/phpdotenv
Phpdotenv
phpdotenv is a PHP environment variable loader and configuration parser. It reads key-value pairs from files and populates them into PHP system environment variables and global arrays to avoid hardcoding sensitive settings in code.
The project includes a configuration variable interpolator to resolve nested references and variables within environment files. It also provides an environment variable validator to ensure required variables exist and match specific data types or values.
The system covers application secret management, multi-environment deployment, and the parsing of raw configuration strings into associative arrays.
Features
- Environment Variable-Based Configuration - Provides a mechanism to configure PHP applications using environment variables loaded from files.
- Environment Variable Loaders - Loads environment variables from .env files into PHP system environment variables and global arrays.
- Multi-Environment Configuration Systems - Enables switching between development, staging, and production settings using different configuration files.
- Environment Variable Configurations - Loads key-value pairs from files and injects them as runtime settings and configuration parameters.
- Secrets Management - Facilitates secret management by storing API keys and passwords in external files outside version control.
- File-Based Loading - Reads key-value pairs from .env files to populate system environment variables and global arrays.
- Environment Variable Validation - Checks that required variables are present and match specific criteria like data types or allowed values.
- Hierarchical Variable Resolvers - Resolves nested variable references to eliminate duplication and ensure consistency across settings.
- Environment Variable Enforcement - Validates the presence of required environment variables and ensures they match specified data types.
- Variable Interpolators - Resolves nested references and variables within environment files to reduce configuration repetition.
- Environment Variable Substitution - Resolves nested references and placeholders within environment variables using recursive substitution.
- Configuration Parsers - Interprets raw environment configuration strings and maps them into application state arrays.
- Environment String Parsers - Transforms raw environment definition strings into associative arrays using dedicated parsing logic.
- Environment Variable Validation - Ensures required environment variables exist and match specific data types or allowed values.
- Superglobal Synchronization - Copies parsed configuration values into PHP superglobals and system functions for application-wide access.
- Configuration - Loads environment variables from .env files.
