In PHP 8.4, declaring function or method parameters with a default value of `null` is deprecated if the type is not nullable.
PHP applications are recommended to ''explicitly'' declare the type as nullable. All type declarations that have a default value of `null`, but without declaring `null` in the type declaration, will emit a deprecation notice:
{{{
function test( array $value = null ) {}
}}}
`Deprecated: Implicitly marking parameter $value as nullable is deprecated, the explicit nullable type must be used instead`
**Recommended Changes**
Change the implicit nullable type declaration to a nullable type declaration, available since PHP 7.1:
{{{#!diff
- function test( string $test = null ) {}
+ function test( ?string $test = null ) {}
}}}
This commit updates the affected instances in core to use a nullable type declaration.
References:
* [https://wiki.php.net/rfc/deprecate-implicitly-nullable-types PHP RFC: Deprecate implicitly nullable parameter types]
* [https://php.watch/versions/8.4/implicitly-marking-parameter-type-nullable-deprecated PHP.Watch: PHP 8.4: Implicitly nullable parameter declarations deprecated]
Follow-up to [28731], [50552], [57337], [57985].
Props ayeshrajans, jrf, audrasjb, jorbin.
Fixes#60786.
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In gettext, `0x950412de` is used to signal GNU MO files. In `WP_Translation_File_MO` this magic marker is used to detect whether a file uses little endian or big endian.
On 32 bit systems, this number will be interpreted by PHP as a float rather than an integer. This change adds extra casting to force an integer.
A similar change was done in the pomo library in the past, see #3780.
Props tmatsuur, swissspidy.
Fixes#60678.
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Ensures that string lookup in MO files only uses the singular string.
This matches expected behavior with gettext files and improves compatibility for cases where for example both `__( 'Product' )` and `_n( 'Product', 'Products’, num )` are used in a project, where both will use the same translation for the singular version. Maintains backward compatibility and feature parity with the pomo library and the PHP translation file format.
Replaces [57386], which was reverted in [57505], with a more accurate and performant solution.
See #59656.
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Ensures that looking up a singular that is also used as a pluralized string works as expected.
This improves compatibility for cases where for example both `__( 'Product' )` and `_n( 'Product', 'Products’, num )` are used in a project, where both will use the same translation for the singular version.
Although such usage is not really recommended nor documented, it must continue to work in the new i18n library in order to maintain backward compatibility and maintain expected behavior.
See #59656.
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This introduces a more lightweight library for loading `.mo` translation files which offers increased speed and lower memory usage.
It also supports loading multiple locales at the same time, which makes locale switching faster too.
For plugins interacting with the `$l10n` global variable in core, a shim is added to retain backward compatibility with the existing `pomo` library.
In addition to that, this library supports translations contained in PHP files, avoiding a binary file format and leveraging OPCache if available.
If an `.mo` translation file has a corresponding `.l10n.php` file, the latter will be loaded instead.
This behavior can be adjusted using the new `translation_file_format` and `load_translation_file` filters.
PHP translation files will be typically created by downloading language packs, but can also be generated by plugins.
See https://make.wordpress.org/core/2023/11/08/merging-performant-translations-into-core/ for more context.
Props dd32, swissspidy, flixos90, joemcgill, westonruter, akirk, SergeyBiryukov.
Fixes#59656.
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