These are the components that make up CodeIgniter 4, and the purpose of each module:
- core: core abstractions (Controller, Model and Entity), as well as bootstrap
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API: convenient request handling
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Autoloader: PS4-compliant class loader, also with classmap and legacy folder support
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CLI: command-line interface & tools
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Cache: caching system, with handlers for popular cache stores
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Commands: command-line tools, including migrations
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Config: CI configuration
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Database: relational database abstractions, with handlers for MySQL & Postgres
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Debug: aookication debugging aids
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Email: email support
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Events: event handling
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Exceptions: named exceptions to help debugging
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Files: enhanced file system support
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Filters: request/response filter management
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Format: response formatting adapter
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HTTP: key request & response handling
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Helpers: legacy-style functions
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Honeypot: filter tool for bots
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I18n: internationaliation, date & time support
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Images: image handling
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Language: localization, with multi-language support
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Log: PSR-3 compatible logging
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Pager: pagination
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Router: touting & route collections
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Security: CSRF filter
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Session: enhanced session handling
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Test: framework or app testing support
- ThirdParty: bundled modules so you don't need to use composer
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Throttle: throughput throttling filter
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Typography: fancy formatting
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Validation: form validation
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View: presentation tools, including parser and viewcells
James Parry
Project Lead
