External PHP Libraries

Last updated on

16 February 2023

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Drupal 8 allows using external PHP libraries via Composer.

Library	Version (used in core)	Latest version	related Issue	Comment
composer/installers	^1.0.24 (1.4.0)			Package-type to install-path mapping for composer.
wikimedia/composer-merge-plugin	^1.4 (1.4.1)			Merge one or more additional `composer.json` files at Composer runtime.
symfony/class-loader	~3.2.8 (3.2.8)	3.4.3	#2937984: [META] Symfony 4.0 compatibility	Tools to autoload classes and cache their locations for performance.
symfony/console	~3.2.8 (3.2.8)	4.0.3	#2937984: [META] Symfony 4.0 compatibility	Eases the creation of beautiful and testable command line interfaces.
symfony/dependency-injection	~3.2.8 (3.2.8)		#2937984: [META] Symfony 4.0 compatibility	Standardize and centralize the way objects are constructed in your application.
symfony/event-dispatcher	~3.2.8 (3.2.8)		#2937984: [META] Symfony 4.0 compatibility	Allows application components to communicate with each other by dispatching events and listening to them.
symfony/http-foundation	~3.2.8 (3.2.8)		#2937984: [META] Symfony 4.0 compatibility	Object-oriented layer for the HTTP specification.
symfony/http-kernel	~3.2.8 (3.2.8)		#2937984: [META] Symfony 4.0 compatibility	Structured process for converting a Request into a Response by making use of the EventDispatcher component. It's flexible enough to create full-stack frameworks, micro-frameworks or advanced CMS systems like Drupal.
symfony/routing	~3.2.8 (3.2.8)		#2937984: [META] Symfony 4.0 compatibility	Maps an HTTP request to a set of configuration variables.
symfony/serializer	~3.2.8 (3.2.8)		#2937984: [META] Symfony 4.0 compatibility	Handles serializing and deserializing data structures, including object graphs, into array structures or other formats like XML and JSON.
symfony/translation	~3.2.8 (3.2.8)		#2937984: [META] Symfony 4.0 compatibility	Provides tools to internationalize an application.
symfony/validator	~3.2.8 (3.2.8)		#2937984: [META] Symfony 4.0 compatibility	Validate values following the Java JSR-303 Bean Validation specification.
symfony/process	~3.2.8 (3.2.8)		#2937984: [META] Symfony 4.0 compatibility	Executes commands in sub-processes.
symfony/polyfill-iconv	^1.0 (1.3.0)			Native PHP implementation of the php.net/iconv functions, for human-language-aware character encoding conversions.
symfony/yaml	~3.2.8 (3.2.8)			Loads and dumps YAML files.
twig/twig	^1.35.0 (1.35.0)			Flexible, fast, and secure template language for PHP.
doctrine/common	^2.5 (2.6.2)			Provides additional functionality that other Doctrine projects depend on such as better reflection support, proxies and much more.
doctrine/annotations	^1.2 (1.2.7)			Docblock annotations parser.
guzzlehttp/guzzle	^6.2.1 (6.3.0)			An extensible PHP HTTP client.
symfony-cmf/routing	^1.4 (1.4.1)			Extends the Symfony routing component with additional features.
easyrdf/easyrdf	^0.9 (0.9.1)			Tools to consume and produce RDF.
zendframework/zend-feed	^2.4 (2.7.0)			Functionality for consuming RSS and Atom feeds.
stack/builder	^1.0 (1.0.4)			Construct a nested HttpKernelInterface decorator tree, modelled as a stack of middlewares.
egulias/email-validator	^1.2 (1.2.14)			Email address validator.
masterminds/html5	^2.1 (2.3.0)			HTML5 parser and serializer.
symfony/psr-http-message-bridge	^1.0 (1.0.0)			Provides integration for PSR7.
zendframework/zend-diactoros	^1.1 (1.4.1)			PSR-7 HTTP Message implementation.
composer/semver	^1.0 (1.4.2)			Semantic versioning utilities with the addition of version constraints parsing and checking.
paragonie/random_compat	^1.0\|^2.0 (2.0.10)			PHP 5.x support for random_bytes() and random_int().
asm89/stack-cors	^1.1 (1.1.0)			Cross-origin resource sharing library and stack middleware.

Note: All version details are related to the current core minor version (e.g. 8.5.x).

As we have version range (versus fixed version), the exact version (in 2nd column) could change every time someone runs composer update. For a more accurate version, check the composer.lock files(in root and under /core).