This changeset introduces a filter-based Robots API, providing central control over the `robots` meta tag.
* Introduces `wp_robots()` function which should be called anywhere a `robots` meta tag should be included.
* Introduces `wp_robots` filter which allows adding or modifying directives for the `robots` meta tag. The `wp_robots()` function is entirely filter-based, i.e. if no filter is added to `wp_robots`, no directives will be present, and therefore the entire `robots` meta tag will be omitted.
* Introduces the following `wp_robots` filter functions which replace similar existing functions that were manually rendering a `robots` meta tag:
* `wp_robots_noindex()` replaces `noindex()`, which has been deprecated.
* `wp_robots_no_robots()` replaces `wp_no_robots()`, which has been deprecated.
* `wp_robots_sensitive_page()` replaces `wp_sensitive_page_meta()`, which has been deprecated. Its rendering of the `referrer` meta tag has been moved to another new function `wp_strict_cross_origin_referrer()`.
Migration to the new functions is straightforward. For example, a call to `add_action( 'wp_head', 'wp_no_robots' )` should be replaced with `add_filter( 'wp_robots', 'wp_robots_no_robots' )`.
Plugins and themes that render their own `robots` meta tags are encouraged to switch to rely on the `wp_robots` filter in order to use the central management layer now provided by WordPress core.
Props adamsilverstein, flixos90, timothyblynjacobs, westonruter.
See #51511.
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Previously, when using `switch_to_locale()` all current loaded text domains were unloaded and added to the `$l10n_unloaded` global. This prevented the just-in-time loading for text domains after a switch. The just-in-time loading was also only possible if the translations were stored in `WP_LANG_DIR`. Both issues have been fixed.
* Adds `WP_Textdomain_Registry` to keep track of the language directory paths for all plugins and themes.
* Updates all `load_*_textdomain()` functions to store the path in `WP_Textdomain_Registry`.
* Adds `$reloadable` parameter to `unload_textdomain()` to define whether a text domain can be loaded just-in-time again. This is used by `WP_Locale_Switcher::load_translations()`.
* Extends `_load_textdomain_just_in_time()` to also support text domains of plugins and themes with custom language directories.
* Fixes the incorrect `test_plugin_translation_after_switching_locale_twice()` test which should have catch this issue earlier.
* Adds a new test plugin/theme to test the loading of translations with a custom language directory.
* Deprecates the now unused and private `_get_path_to_translation()` and `_get_path_to_translation_from_lang_dir()` functions.
Props yoavf, swissspidy, dd32, ocean90.
See #26511.
Fixes#39210.
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The reason for introducing `wp_slash_strings_only()` in [46454] was to keep non-string values untouched.
Later, `wp_slash()` itself was updated in [48433] to prevent changing non-string values.
To avoid confusion, `wp_slash_strings_only()` is now deprecated.
Props ayeshrajans, ocean90.
Fixes#50635.
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In PHP 8, the GD extension uses `GdImage` objects instead of resources for its underlying data structures.
This updates the existing `is_resource()` calls for image resources in core to accomodate for `GdImage` instances as well.
Props ayeshrajans, jrf.
Fixes#50833.
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There are two pieces in here:
1) The update to change blacklist to blocklist is moved to disallowed_list. "Block" has a meaning in our code, and there could be ambiguity between this code and code related to blocks.
2) This improves backwards compatibility for code that was accessing the now deprecated code.
Previously: [48477], [48405], [48400], [48121], [48122], [48124], [48142], [48566]
Props: desrosj, SergeyBiryukov, johnjamesjacoby
Fixes: #50413
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The new names make the purpose more clear. It also adds consistency with the `$allowed_options` global variable.
Also in this change, the `wp-deprecated` dependency has been removed from the password strength meter in favor of a `window.console.log()` call to avoid adding 3 dependencies for one deprecated notice.
Props SergeyBiryukov, ocean90, desrosj
Fixes#50413.
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“The WordPress open source community cares about diversity. We strive to maintain a welcoming environment where everyone can feel included.”
With this commit, all occurrences of “whitelist” and “blacklist” (with the single exception of the `$new_whitelist_options` global variable) are removed. A new ticket has been opened to explore renaming the `$new_whitelist_options` variable (#50434).
Changing to more specific names or rewording sentences containing these terms not only makes the code more inclusive, but also helps provide clarity. These terms are often ambiguous. What is being blocked or allowed is not always immediately clear. This can make it more difficult for non-native English speakers to read through the codebase.
Words matter. If one contributor feels more welcome because these terms are removed, this was worth the effort.
Props strangerstudios, jorbin, desrosj, joemcgill, timothyblynjacobs, ocean90, ayeshrajans, davidbaumwald, earnjam.
See #48900, #50434.
Fixes#50413.
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The `register_globals` directive in PHP was deprecated in version 5.3 and removed entirely in 5.4.
Now that WordPress only supports PHP 5.6.20 and newer, the `wp_unregister_GLOBALS()` function can be deprecated.
Props ayeshrajans, desrosj, SergeyBiryukov.
Fixes#49938.
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This avoids the performance overhead of the function call every time `dirname( __FILE__ )` was used instead of `__DIR__`.
This commit also includes:
* Removing unnecessary parentheses from `include`/`require` statements. These are language constructs, not function calls.
* Replacing `include` statements for several files with `require_once`, for consistency:
* `wp-admin/admin-header.php`
* `wp-admin/admin-footer.php`
* `wp-includes/version.php`
Props ayeshrajans, desrosj, valentinbora, jrf, joostdevalk, netweb.
Fixes#48082.
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This change introduces a new Composer script, `compat` that will scan the codebase for (detectable) potential PHP compatibility issues using the `PHP_CodeSniffer` and a custom ruleset based off of the `PHPCompayibilityWP` ruleset (`phpcompat.xml.dist`).
The command will be run as a separate job within each Travis build. While many compatibility issues and false positives have already been corrected in this commit and other Trac tickets, there are still some remaining. For that reason, the job is allowed to fail while the remainder of the potential compatibility issues are investigated and addressed. After those are resolved, the job should be set as required to pass to help prevent new compatibility issues from being introduced.
Props desrosj, jrf, all PHPCompatibilityWP and PHPCompatibility contributors.
Fixes#46152.
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Rather than relying `func_get_args()` to retrieve arbitrary function arguments, we can now use the spread operator to assign them directly to a variable.
While these functions are deprecated, they can still get a minor performance boost in case they are being called.
Props jrf.
See #47678.
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Noteable changes:
- The `magic_quotes_runtime` and `magic_quotes_sybase` settings were removed in PHP 5.4, so no longer need to be set.
- Some functions that use external libraries can generate errors that can't be tested for, so are globally allowed to silence errors.
- Quite a few functions would cause errors if `safe_mode` was set. This setting was removed in PHP 5.4.
- Only a handful of `header()` calls needed corresponding `headers_sent()` checks for unit tests to pass, but more may need to be added as the nightlies builds are tested.
See #46732.
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Use of `date()` in core depends on PHP timezone set to UTC and not changed by third party code (which cannot be guaranteed).
`gmdate()` is functionally equivalent, but is not affected by PHP timezone setting: it's always UTC, which is the exact behavior the core needs.
Props nielsdeblaauw, Rarst.
Fixes#46438. See #44491.
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"Install" is not a noun, and while it might be acceptable to use the verb as a noun, it is not correct. Using the correct
noun, "installation", increases clarity, especially for non-native English speakers.
This change fixes the usage in user-facing text and in developer documentation.
Fixes#41620
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Felix Arntz
John Blackbourn
Dominik Schilling
Sergey Biryukov
Aaron Jorbin
desrosj
Andrew Ozz
Gary Pendergast
Drew Jaynes