PHP 8.3 End of Life

Security fixes only

PHP 8.3 is in security-only support. Active support ended on Dec 31, 2025, and it will reach end of life on Dec 31, 2027.

PHP 8.3 reaches end of life in 434 days. Only security issues are being fixed.

PHP 8.3 support timeline

Released: Nov 23, 2023
Active support until: Dec 31, 2025
Security support until (EOL): Dec 31, 2027
Status today: Security fixes only

Source: php.net. Last updated Oct 23, 2026.

What’s new in PHP 8.3

Typed class constants
json_validate()
#[\Override] attribute
Dynamic class constant fetch
Deep cloning of readonly properties
mb_str_pad() and new Randomizer methods

Upgrading from PHP 8.3

The smallest safe jump is to PHP 8.4, the closest version with active support; you can also go straight to PHP 8.5. Upgrading several versions at once is common, but review the deprecations of every version in between.

Back up your files and database.
Check that your framework, CMS, theme and plugins support PHP 8.4. Test on a staging copy first.
Read the official migration guides on php.net for each version between 8.3 and 8.4.
Switch the PHP version in your hosting panel or install the new php-fpm package, then watch the error log.
Run the PHP Version Checker again to confirm.

Is your website still on PHP 8.3?

Check any URL for free and see the detected PHP version, the evidence behind it, and its support status.

Check PHP version

PHP 8.3 FAQ

When was PHP 8.3 released?

PHP 8.3 was released on Nov 23, 2023.

When does PHP 8.3 reach end of life?

PHP 8.3 is in security-only support. Active support ended on Dec 31, 2025, and it will reach end of life on Dec 31, 2027.

Is PHP 8.3 still safe to use?

Yes, for now. PHP 8.3 still gets security fixes until Dec 31, 2027, but no regular bug fixes. Plan an upgrade to PHP 8.4.

What should I upgrade PHP 8.3 to?

Upgrade to PHP 8.4, the closest version that still has active support, or go straight to PHP 8.5 if your application and plugins support it. Supported versions: 8.4, 8.5.

How do I check if my website runs PHP 8.3?

Enter your site URL in the PHP Version Checker, or run php -v on the server. In WordPress, go to Tools → Site Health → Info → Server.

Upgrading from PHP 8.3

Back up your files and database.

Check that your framework, CMS, theme and plugins support PHP 8.4. Test on a staging copy first.

Read the official migration guides on php.net for each version between 8.3 and 8.4.

Switch the PHP version in your hosting panel or install the new php-fpm package, then watch the error log.

Run the PHP Version Checker again to confirm.

PHP 8.3 FAQ

When was PHP 8.3 released?

PHP 8.3 was released on Nov 23, 2023.

When does PHP 8.3 reach end of life?

PHP 8.3 is in security-only support. Active support ended on Dec 31, 2025, and it will reach end of life on Dec 31, 2027.

Is PHP 8.3 still safe to use?

Yes, for now. PHP 8.3 still gets security fixes until Dec 31, 2027, but no regular bug fixes. Plan an upgrade to PHP 8.4.

What should I upgrade PHP 8.3 to?

Upgrade to PHP 8.4, the closest version that still has active support, or go straight to PHP 8.5 if your application and plugins support it. Supported versions: 8.4, 8.5.

How do I check if my website runs PHP 8.3?

Enter your site URL in the PHP Version Checker, or run php -v on the server. In WordPress, go to Tools → Site Health → Info → Server.