This changeset introduces a `WP_Shutdown_Handler` class that detects fatal errors and which extension (plugin or theme) causes them. Such an error is then recorded, and an error message is displayed. Subsequently, in certain protected areas, for example the admin, the broken extension will be paused, ensuring that the website is still usable in the respective area. The major benefit is that this mechanism allows site owners to still log in to their website, to fix the problem by either disabling the extension or solving the bug and then resuming the extension.
Extensions are only paused in certain designated areas. The frontend for example stays unaffected, as it is impossible to know what pausing the extension would cause to be missing, so it might be preferrable to clearly see that the website is temporarily not accessible instead.
The fatal error recovery is especially important in scope of encouraging the switch to a maintained PHP version, as not necessarily every WordPress extension is compatible with all PHP versions. If problems occur now, non-technical site owners that do not have immediate access to the codebase are not locked out of their site and can at least temporarily solve the problem quickly.
Websites that have custom requirements in that regard can implement their own shutdown handler by adding a `shutdown-handler.php` drop-in that returns the handler instance to use, which must be based on a class that inherits `WP_Shutdown_Handler`. That handler will then be used in place of the default one.
Websites that would like to modify specifically the error template displayed in the frontend can add a `php-error.php` drop-in that works similarly to the existing `db-error.php` drop-in.
Props afragen, bradleyt, flixos90, ocean90, schlessera, SergeyBiryukov, spacedmonkey.
Fixes#44458.
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As many WordPress sites use a static homepage rather than a blog, this link gives a natural next step for new sites owners wanting to configure their site in this manner.
Props professor44, joyously, nielslange, mukesh27, melchoyce.
Fixes#45019.
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After [42832], [42891] and [43006], this changeset refines the core notice informing about an outdated PHP version:
* The link to the Update PHP information page can now be adjusted using either a `WP_UPDATE_PHP_URL` environment variable, or a new `wp_update_php_url` filter.
* If that URL is different from the default one that points to https://wordpress.org/support/update-php/ or its localized equivalent, a note indicates that the linked resource has not been provided by WordPress itself, and the default URL is still linked to as an additional resource.
* The URL for the default information page has been updated to use the slug `update-php` instead of `upgrade-php`.
* `@since` annotations have been updated.
Going forward, admin areas that display information related to the PHP version should use the new function `wp_get_update_php_url()`.
Props afragen, fierevere, flixos90, markjaquith, miss_jwo, nerrad, pento, schlessera, SergeyBiryukov, spacedmonkey.
Fixes#45686. See #41191.
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The order of the type and variable name in the `param` tags for the `wp_get_default_privacy_policy_content` filter is incorrectly reversed. This moves the two into the correct order.
Props ishitaka, mukesh27.
Fixes#45416.
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An integer comparison is performed against `control.currentErrorAnnotations`, but `control.currentErrorAnnotations` is actually an array. This fixes that comparison so the content saves correctly.
Props barryceelen.
Fixes#43657.
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As of this commit, WordPress is no longer a simple blogging platform. It's now a comprehensive publishing solution.
This also replaces a couple of other "blog" references that were missed previously.
Props igmoweb, Valer1e, audrasjb, pento.
Fixes#41000.
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Currently, when viewing the block editor with JavaScript disabled, the user sees a blank admin page with the admin menu sidebar. This adds an admin notice informing the user that JavaScript is required for the new block editor.
Props mkaz, pento, azaozz, ocean90, desrosj.
Fixes#45453.
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Currently, when an SVG is used as a menu icon, the color is inconsistent with the other, default dashicons and the contrast ratio does not meet the minimum requirement for accessibility.
This updates the base color for the default `fresh` color scheme to ensure consistency and proper contrast.
Props swift, dschalk.
Fixes#44209.
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In [44185], a bug was introduced where hierarchical post types would not display in the correct default order (hierarchically).
This was caused by a `! isset()` check, which returned `false` after [44185], causing the correct default value to not be applied. This switches that conditional to use an `empty()` check, ignoring the new empty string assignment that was added to prevent a PHP notice when `compact()` is called.
Props davidbinda.
Fixes#45711.
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In PHP 7.3, the `compact()` function has been changed to issue an `E_NOTICE` level error if a passed string refers to an unset variable. In previous versions of PHP, this notice was silently skipped. This fixes a few more instances of unset variables in the WordPress admin.
The full RFC can be viewed here: https://wiki.php.net/rfc/compact.
See #44416.
Merges [44185] into trunk.
Fixes#45483.
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If a meta box is registered with the `__block_editor_compatible_meta_box` set to `false`, it's indicating that it doesn't work in the block editor. If that's the case, we can add a place holder to inform the user that they'll need to use the classic interface to work with this meta box.
Props pento, jorgefilipecosta, peterwilsoncc, karmatosed, noisysocks, dd32, ocean90.
Merges [43941] and [43945] to trunk.
Fixes#45217.
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The version is set properly and the scripts are automatically loaded in the footer.
This patch also includes a revert for the reusable blocks enqueue script.
Props pento, swissspidy, youknowriad.
Merges [43942] into trunk.
Fixes#45402.
See #45396.
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This ensures the "import from JSON" and "export JSON" buttons are shown properly. The script is loaded in the footer because it relies on the DOM being already there.
Props noisysocks, mukesh27.
Merges [43936] into trunk.
Fixes#45396.
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In RTL languages, WordPress adds `style-editor-rtl.css` editor styles to the global `$editor_styles`.
This patch ignores handling these styles if the file is not preset.
Also, clarify the docs for the return value of the `block_version` function.
Props mostafa.s1990, desrosj, mukesh27.
Merges [43923] and [43924] to trunk.
Fixes#45288, #45342.
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