Past changes to supported PHP versions have been as followed:
In WordPress version 4.1: Added support for PHP 5.6.
In WordPress 4.4: Added support for PHP 7.0 (dev note).
In WordPress 4.7: Added support for PHP 7.1.
In WordPress 4.9: Added support for PHP 7.2.
In WordPress 5.0: Added support for PHP 7.3 (dev note).
In WordPress 5.2: Dropped support for PHP 5.2, 5.3, 5.4, 5.5.
In WordPress 5.3: Added support for PHP 7.4 (dev note).
In WordPress 5.6: Added “beta support” for PHP 8.0 (dev note).
In WordPress 5.9: Added “beta support” for PHP 8.1 (dev note).
In WordPress 6.1: Added “beta support” for PHP 8.2 (dev note pending).https://make.wordpress.org/core/handbook/references/php-compatibility-and-wordpress-versions/
