Add v15 and PHP 8.2 to compatibility chart

[rmccue]

https://docs.altis-dxp.com/guides/updating-php/#altis-compatibility-chart is missing v15 and PHP 8.2

[kadamwhite]

@rmccue In the absence of an actual docs change, what IS the support matrix for v15, is 8.0 still supported or is it only 8.1 or 8.2?

[rmccue]

@kadamwhite We mirror the PHP official support timelines; 8.0 is supported until November, so it will not be supported for the full duration of the v15 release (which is supported until April 2024): https://www.php.net/supported-versions.php

For future proofing, we'd recommend 8.1 or 8.2 (which are supported beyond the end of v15), but if you plan on upgrading in the meantime, 8.0 would be fine.

[johnbillion]

The upgrade guide for v15 states:

Altis v15 fully supports PHP 8.2 in both local and cloud environments

This differs from the v15/8.2 cell in the compatibility table which says Experimental.

Can the support for 8.2 on v15 be clarified?

[mikelittle]

The compatibility table reflects the current state of WordPress 6.2 support for PHP8.2 which is "beta support". There are no dev notes to clarify the situation.

This page (https://make.wordpress.org/hosting/handbook/server-environment/#php) could be interpreted to say that that PHP8.2 is fully supported in WP 6.2. But I'd love some clarification.

[rmccue]

See also, https://make.wordpress.org/core/2023/06/20/proposal-criteria-for-removing-beta-support-from-each-php-8-version/