`str_starts_with()` was introduced in PHP 8.0 to perform a case-sensitive check indicating if the string to search in (haystack) begins with the given substring (needle).
WordPress core includes a polyfill for `str_starts_with()` on PHP < 8.0 as of WordPress 5.9.
This commit replaces `0 === strpos( ... )` with `str_starts_with()` in core files, making the code more readable and consistent, as well as improving performance.
While `strpos()` is slightly faster than the polyfill on PHP < 8.0, `str_starts_with()` is noticeably faster on PHP 8.0+, as it is optimized to avoid unnecessarily searching along the whole haystack if it does not find the needle.
Follow-up to [52039], [52040], [52326].
Props spacedmonkey, costdev, sabernhardt, mukesh27, desrosj, jorbin, TobiasBg, ayeshrajans, lgadzhev, SergeyBiryukov.
Fixes#58012.
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This changeset indirectly improves performance of the commonly used `esc_url()` function by optimizing the low-level function `wp_kses_bad_protocol()` for the by far most common scenarios, which are URLs using either the `http` or `https` protocol.
For this common scenario, the changeset now avoids the `do while` loop. While for a single call to the `esc_url()` function the performance wins are negligible, given that `esc_url()` is often called many times in one page load, they can add up, making this a worthwhile improvement.
Props mukesh27, schlessera, markjaquith, azaozz, spacedmonkey.
Fixes#22951.
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While using reserved PHP keywords as parameter name labels is allowed, in the context of function calls using named parameters in PHP 8.0+, this will easily lead to confusion. To avoid that, it is recommended not to use reserved keywords as function parameter names.
This commit:
* Renames the `$string` parameter to `$content` in:
* `wp_kses()`
* `wp_kses_hook()`
* `wp_kses_split()`
* `wp_kses_split2()`
* `wp_kses_bad_protocol()`
* `wp_kses_no_null()`
* `wp_kses_stripslashes()`
* `wp_kses_bad_protocol_once()`
* `wp_kses_normalize_entities()`
* `wp_kses_decode_entities()`
* Renames the `$string` parameter to `$attr` in:
* `wp_kses_one_attr()`
* `wp_kses_html_error()`
* Renames the `$match` parameter to `$matches` in:
* `_wp_kses_split_callback()`
* `_wp_kses_decode_entities_chr()`
* `_wp_kses_decode_entities_chr_hexdec()`
* Renames the `$string` parameter to `$scheme` in `wp_kses_bad_protocol_once2()`.
Follow-up to [52946], [52996], [52997], [52998], [53003], [53014], [53029], [53039], [53116], [53117], [53137], [53174], [53184], [53185], [53192], [53193], [53198], [53203], [53207], [53215], [53216], [53220], [53230], [53232], [53236], [53239], [53240], [53242], [53243], [53245], [53246], [53257], [53269], [53270], [53271], [53272], [53273], [53274], [53275], [53276], [53277], [53281], [53283], [53284], [53285], [53287], [53364], [53365], [54927], [54929], [54930], [54931], [54932].
Props jrf, aristath, poena, justinahinon, SergeyBiryukov.
See #56788.
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This resolves a bug in Featured Image blocks where `object-fit` was being removed during the `render_callback`.
Props raduiason, pbiron, kebbet, SergeyBiryukov, bernhard-reiter, ironprogrammer, xknown, audrasjb, ckanderson22, ivanjeronimo, seriouslysenpai.
Fixes#56855.
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When using the `CUSTOM_TAGS` constant, these global variables should be set to arrays:
* `$allowedposttags`
* `$allowedtags`
* `$allowedentitynames`
* `$allowedxmlentitynames`
This commit aims to improve developer experience by displaying a more helpful message to explain a PHP fatal error further in the code if any of these globals are either not set or not an array.
Note Using `CUSTOM_TAGS` is not recommended and should be considered deprecated. The `wp_kses_allowed_html` filter is more powerful and supplies context.
Follow-up to [832], [834], [2896], [13358], [21796], [28845], [43016], [48072].
Props doctorlai, pento, KnowingArt_com, bosconiandynamics, TJNowell, ironprogrammer, audrasjb, mukesh27, SergeyBiryukov.
Fixes#47357.
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Add a note that the parameter is optional and defaults to the result of `wp_allowed_protocols()`.
This affects:
* `wp_kses()`
* `filter_block_content()`
* `filter_block_kses()`
* `filter_block_kses_value()`
Includes synchronizing the `$allowed_html` parameter description for consistency.
Follow-up to [649], [6630], [18826], [32603], [43016], [46896], [48478].
Props armondal, SergeyBiryukov.
Fixes#56580.
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The `safecss_filter_attr()` function allows using custom CSS variables like `color: var(--color)`. However, it did not allow assigning values to CSS variables like `--color: #F00`, which is common in Global Styles and Gutenberg.
This commit adds support for assigning values to CSS variables, so that the function can be used consistently in Global Styles and the future Style Engine in Gutenberg.
Follow-up to [50923], [54100].
Props aristath, ramonopoly, SergeyBiryukov.
Fixes#56353.
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Adds support for the following CSS properties considered safe for inline CSS:
* `flex-wrap`
* `gap`
* `column-gap`
* `row-gap`
Extends support for `margin` and `padding` to include logical properties:
* `margin-block-start`
* `margin-block-end`
* `margin-inline-start`
* `margin-inline-end`
* `padding-block-start`
* `padding-block-end`
* `padding-inline-start`
* `padding-inline-end`
Follow-up to [46235].
Props andrewserong, peterwilsoncc, ramonopoly, bernhard-reiter.
Fixes#56122.
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Additionally, this commit updates `safecss_filter_attr()` to add support for nested `var()` functions, so that a fallback value can be another CSS variable.
Follow-up to [50923].
Props johnregan3, noisysocks, cbravobernal, uxl, isabel_brison, andrewserong, ramonopoly, joyously, bernhard-reiter, peterwilsoncc.
Fixes#55966.
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Expand documentation of the `wp_kses_allowed_html` hook to indicate that developers must add permitted HTML tags and attributes in lowercase for KSES to recognise they are permitted.
Props r-a-y, SergeyBiryukov, peterwilsoncc.
Fixes#55407.
See #53399.
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From the conceptual point it makes sense to execute global styles filters before post filters. So the post filters are always the last.
Props xknown, sergey, audrasjb, vortfu, oandregal, get_dave.
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* `str_contains()`
* `str_ends_with()`
* `str_starts_with()`
Additionally, include a test for a PDF file in an `<object>` tag with an unsupported protocol.
Follow-up to [51963], [52039], [52040], [52304], [52309].
Props TobiasBg, ramonopoly.
See #54261.
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Improves the URL validation in `_wp_kses_allow_pdf_objects()` to account for sites using an upload path that contains a port, for example wp.org:8080.
Follow up to [51963], [52304].
Props ocean90, ramonopoly, talldanwp.
See #54261.
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Add callback validation to HTML tag attributes for increased flexibility over an array of values only.
In `object` tags, validate the `data` attribute via a callback to ensure it is a PDF and matches the `type` attribute. This prevents mime type mismatches in browsers.
Follow up to [51963].
Props Pento, dd32, swissspidy, xknown, peterwilsoncc.
Fixes#54261.
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This fixes a discrepancy where the the global name used in the function did not match the one declared at the beginning of `kses.php`, and ensures that the function gets the correct array of allowed XML entity names.
Includes unit tests.
Follow-up to [48072].
Props ovidiul, costdev, peterwilsoncc, SergeyBiryukov.
Fixes#54060.
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- First pass at adding the site editor from the Gutenberg plugin to
wp-admin/site-editor.php.
- Adds miscellaneous PHP changes from Gutenberg 10.1 - 11.9.
Follows [52042].
See #54337.
Props youknowriad, aristath, hellofromtonya, gziolo.
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This commit adds global styles user content escaping. In addition, it ports the logic on the Gutenberg plugin implemented on WordPress/gutenberg#28061 to the core.
The logic tries to follow what was done for standard post content.
See #54336.
Props oandregal.
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This change adds two now attribute-related config options to KSES:
- An array of allowed values can be defined for attributes. If the attribute value doesn't fall into the list, the attribute will be removed from the tag.
- Attributes can be marked as required. If a required attribute is not present, KSES will remove all attributes from the tag. As KSES doesn't match opening and closing tags, it's not possible to safely remove the tag itself, the safest fallback is to strip all attributes from the tag, instead.
Included with this change is an implementation of these options, allowing the `<object>` tag to be stored in posts, but only when it has a `type` attribute set to `application/pdf`.
Props pento, swissspidy, peterwilsoncc, dd32, jorbin.
Fixes#54261.
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The filter allows to modify the list of allowed CSS attributes, however support for specific CSS attributes is added to the function rather than the filter.
Follow-up to [37931], [38121], [42880], [44136], [44531], [45242], [45363], [46235], [46793], [50634], [50923].
Props tmatsuur, muhammadfaizanhaidar, sabernhardt.
Fixes#53731.
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