PHP Conference Nagoya 2025

PHP 5.5.3 Release Announcement

The PHP development team announces the immediate availability of PHP 5.5.3. This release fixes a bug in the patch for CVE-2013-4248 in OpenSSL module.

All PHP users are encouraged to upgrade to this release.

For source downloads of PHP 5.5.3 please visit our downloads page, Windows binaries can be found on windows.php.net/download/. The list of changes is recorded in the ChangeLog.

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