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TYPO3 and PHP Version Requirements

Purpose: Definitive version compatibility matrix for TYPO3 conformance checking Last Updated: 2025-01-18

Official Version Support Matrix

TYPO3 12 LTS

Release: April 2022 End of Life: October 2026 PHP Support: 8.1 - 8.4

PHP Version	Support Status	Since TYPO3 Version
8.1	✅ Supported	12.0.0
8.2	✅ Supported	12.1.0
8.3	✅ Supported	12.4.0
8.4	✅ Supported	12.4.24 (Dec 2024)

Minimum Requirements:

PHP: 8.1.0
Database: MariaDB 10.4+ / MySQL 8.0+ / PostgreSQL 10.0+ / SQLite 3.8.3+

TYPO3 13 LTS

Release: October 2024 End of Life: April 2028 PHP Support: 8.2 - 8.4

PHP Version	Support Status	Since TYPO3 Version
8.1	❌ Not Supported	-
8.2	✅ Supported	13.0.0
8.3	✅ Supported	13.0.0
8.4	✅ Supported	13.4.0

Minimum Requirements:

PHP: 8.2.0
Database: MariaDB 10.4+ / MySQL 8.0+ / PostgreSQL 10.0+ / SQLite 3.8.3+

Conformance Checker Standards

The TYPO3 conformance checker validates extensions against:

Target Versions:

TYPO3: 12.4 LTS / 13.x
PHP: 8.1 / 8.2 / 8.3 / 8.4
PSR Standards: PSR-11 (DI), PSR-12 (Coding Style), PSR-14 (Events), PSR-15 (Middleware)

Why This Range:

Covers both TYPO3 12 LTS and 13 LTS
PHP 8.1+ ensures support for all modern PHP features used in TYPO3 extensions
Extensions can target TYPO3 12 (PHP 8.1+) and/or TYPO3 13 (PHP 8.2+)

Extension composer.json Examples

TYPO3 12 LTS Only

{
  "require": {
    "php": "^8.1 || ^8.2 || ^8.3 || ^8.4",
    "typo3/cms-core": "^12.4"
  }
}

TYPO3 13 LTS Only

{
  "require": {
    "php": "^8.2 || ^8.3 || ^8.4",
    "typo3/cms-core": "^13.4"
  }
}

TYPO3 12 and 13 LTS (Recommended for New Extensions)

{
  "require": {
    "php": "^8.2 || ^8.3 || ^8.4",
    "typo3/cms-core": "^12.4 || ^13.4"
  }
}

Note: When targeting both TYPO3 12 and 13, use PHP 8.2+ as minimum to satisfy TYPO3 13's requirements.

PHP Feature Availability

PHP 8.1 Features (TYPO3 12+)

Enumerations
Readonly properties
First-class callable syntax
New in initializers
Pure intersection types
Never return type
Final class constants
Fibers

PHP 8.2 Features (TYPO3 13+)

Readonly classes
Disjunctive Normal Form (DNF) types
Null, false, and true as standalone types
Constants in traits
Deprecated dynamic properties

PHP 8.3 Features (TYPO3 12.4+ / 13+)

Typed class constants
Dynamic class constant fetch
#[\Override] attribute
json_validate() function

PHP 8.4 Features (TYPO3 12.4.24+ / 13.4+)

Property hooks
Asymmetric visibility
New array functions
HTML5 support in DOM extension

Migration Paths

From TYPO3 11 to 12

Update PHP to 8.1+ (recommended: 8.2+)
Update extension to TYPO3 12 compatibility
Test thoroughly on PHP 8.2+ for future TYPO3 13 compatibility

From TYPO3 12 to 13

Ensure PHP 8.2+ is already in use
Update TYPO3 dependencies to ^13.4
Remove deprecated API usage
Update Services.yaml for TYPO3 13 changes (if any)

Deprecation Timeline

PHP Versions:

PHP 8.0: End of Life - November 2023 (Not supported by TYPO3 12/13)
PHP 8.1: Security fixes until November 2025
PHP 8.2: Security fixes until December 2026
PHP 8.3: Security fixes until December 2027
PHP 8.4: Security fixes until December 2028

Recommendation: Target PHP 8.2+ for new extensions to ensure long-term support alignment with TYPO3 13 LTS lifecycle.

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