Does Magento 2.4.9 support PHP 8.4?
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Magento Version Checker
Yes — Magento 2.4.9 officially supports PHP 8.3 and PHP 8.4 (8.4 added with the 2.4.9 GA in Apr 2026). Older lines:
- 2.4.7: PHP 8.2 + 8.3 (8.4 unofficial — some warnings, no GA support).
- 2.4.8: PHP 8.3 only (8.4 added experimentally in -p1).
- 2.4.9: PHP 8.3 + 8.4 fully supported.
- 2.4.10 (expected Q4 2026): probably PHP 8.4 minimum.
PHP 8.5 is not supported by any Magento version as of May 2026. PHP 8.5 entered GA in Nov 2025 but Magento’s release cadence runs ~12 months behind PHP. Expect 2.4.10 (Q4 2026) or 2.4.11 (Q2 2027) to add it.
If you’re upgrading PHP separately from Magento: upgrade Magento first, then PHP within the same maintenance window. Doing PHP first on an older Magento breaks the framework (PHP 8.3+ deprecates things 2.4.6 still depends on). The exception: PHP 7.4 → 8.x is so foundational that some teams do PHP first on a heavily-patched older Magento, then Magento — but it’s riskier.
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