Dynamic (non-explicitly declared) properties are deprecated as of PHP 8.2 and are expected to become a fatal error in PHP 9.0.
There are a number of ways to mitigate this:
* If it is an accidental typo for a declared property: fix the typo.
* For known properties: declare them on the class.
* For unknown properties: add the magic `__get()`, `__set()`, et al. methods to the class or let the class extend `stdClass` which has highly optimized versions of these magic methods built in.
* For unknown ''use'' of dynamic properties, the `#[AllowDynamicProperties]` attribute can be added to the class. The attribute will automatically be inherited by child classes.
Trac ticket #56034 is open to investigate and handle the third and fourth type of situations, however it has become clear this will need more time and will not be ready in time for WP 6.1.
To reduce “noise” in the meantime, both in the error logs of WP users moving onto PHP 8.2, in the test run logs of WP itself, in test runs of plugins and themes, as well as to prevent duplicate tickets from being opened for the same issue, this commit adds the `#[AllowDynamicProperties]` attribute to all “parent” classes in WP.
The logic used for this commit is as follows:
* If a class already has the attribute: no action needed.
* If a class does not `extend`: add the attribute.
* If a class does `extend`:
- If it extends `stdClass`: no action needed (as `stdClass` supports dynamic properties).
- If it extends a PHP native class: add the attribute.
- If it extends a class from one of WP's external dependencies: add the attribute.
* In all other cases: no action — the attribute should not be needed as child classes inherit from the parent.
Whether or not a class contains magic methods has not been taken into account, as a review of the currently existing magic methods has shown that those are generally not sturdy enough and often even set dynamic properties (which they should not). See the [https://www.youtube.com/watch?v=vDZWepDQQVE live stream from August 16, 2022] for more details.
This commit only affects classes in the `src` directory of WordPress core.
* Tests should not get this attribute, but should be fixed to not use dynamic properties instead. Patches for this are already being committed under ticket #56033.
* While a number bundled themes (2014, 2019, 2020, 2021) contain classes, they are not a part of this commit and may be updated separately.
Reference: [https://wiki.php.net/rfc/deprecate_dynamic_properties PHP RFC: Deprecate dynamic properties].
Follow-up to [53922].
Props jrf, hellofromTonya, markjaquith, peterwilsoncc, costdev, knutsp, aristath.
See #56513, #56034.
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This changeset ensures third-person singular verbs are used for function descriptions in the `Walker` class, and adjusts some non-standard docblock descriptions for various properties and methods of the class.
See #54729.
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In the parent class, renames the parameter `$object` to `$data_object`.
Why? `object` is a PHP reserved keyword. The parameter name is selected for consistency with `Walker::start_el()`.
In each child class: renames the parameter to match the parent's method signature.
Why? PHP 8 introduces the ability to pass named arguments to function/method calls. This means the child and parent method signatures (i.e. parameter names) need to match.
Changes for readability:
- `@since` clearly specifies the original parameter name and its new name as well as why the change happened.
Follow-up to [7737], [8900], [8970], [14248], [16100], [25642], [25644], [37051], [37056].
Props jrf, hellofromTonya, sergeybiryukov, azaozz, desrosj, johnbillion.
See #51553.
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The parent class uses `$current_object_id` while most of the child classes use `$id`. As the parent class' is more descriptive, renaming the last parameter in each of child class.
Why? PHP 8 introduces the ability to pass named arguments to function/method calls. This means the child and parent method signatures (i.e. parameter names) need to match.
Changes for readability:
- `@since` clearly specifies the original parameter name and its new name as well as why the change happened.
- In methods longer than a single line, the generic parameter is reassigned to the original parameter restoring it for context for use within the method. An inline comment is added to explain why this reassignment is made.
- In cases where the original parameter name was too generic or misleading, renamed (when reassigning) to a more descriptive name for use within the method.
Follow-up to [7737], [8900], [8970], [14248], [15077], [16100], [25642], [25644], [37051], [37054], [37056], [46271], [47189], [51739].
Props jrf, hellofromTonya, sergeybiryukov, azaozz, desrosj, johnbillion.
See #51553.
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In the parent class, renames the parameter `$object` to `$data_object`.
Why? `object` is a PHP reserved keyword.
In each child class: renames the corresponding parameter to match the parent's method signature.
Why?
PHP 8 introduces the ability to pass named arguments to function/method calls. This means the child and parent method signatures (i.e. parameter names) need to match.
Changes for readability:
- `@since` clearly specifies the original parameter name and its new name as well as why the change happened.
- in methods longer than a single line, the generic parameter is reassigned to the original parameter restoring it for context for use within the method. An inline comment is added to explain why this reassignment is made.
- in cases where the original parameter name was too generic, renamed (when reassigning) to a more descriptive name for use within the method.
Follow-up to [7737], [8900], [8970], [14248], [15077], [16100], [25642], [25644], [37051], [37054], [37056], [46271], [47189].
Props jrf, hellofromTonya, sergeybiryukov, azaozz, desrosj, johnbillion.
See #51553.
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This affects the `::walk()`, `::paged_walk()`, and `::get_number_of_root_elements()` methods.
PHP 8 changes the way string to number comparisons are performed: https://wiki.php.net/rfc/string_to_number_comparison
In particular, checking if an empty string is equal to zero in PHP 8 evaluates to `false`, not `true`.
For the `WP_Walker` class, this resulted in an incorrect handling of parent items in a few methods.
By explicitly checking for an `empty()` value instead, we make sure the check works as expected in PHP 8 and earlier versions.
Follow-up to [35876], [48960], [49043], [49076].
Props sunxiyuan, aristath, SergeyBiryukov.
Fixes#53474.
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Rather than relying on `func_get_args()` to retrieve arbitrary function arguments, we can now use the spread operator to assign them directly to a variable.
This re-applies [45624] and reverts [45640], with a dev note upcoming for plugin authors to maintain backward compatibility with old versions of WordPress.
Props jrf.
See #47678.
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The WPCS `WordPress.WhiteSpace.PrecisionAlignment` rule throws warnings for a bunch of code that will likely cause issues for `wpcbf`. Fixing these manually beforehand gives us better auto-fixed results later.
See #41057.
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Prior to about 2013, many class methods lacked even access modifiers which made the `@access` notations that much more useful. Now that we've gotten to a point where the codebase is more mature from a maintenance perspective and we can finally remove these notations. Notable exceptions to this change include standalone functions notated as private as well as some classes still considered to represent "private" APIs.
See #41452.
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Also use 'back-compat' in some inline comments where backward compatibility is the subject and shorthand feels more natural.
Note: 'backwards compatibility/compatibile' can also be considered correct, though it's primary seen in regular use in British English.
Props ocean90.
Fixes#36835.
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* Every subclass of `Walker` overrides `$db_fields` and makes it public
* `wp_list_comments()` accesses `->max_pages` on an instance of `Walker`, it must be public
* `$has_children` was added as `protected` in 4.0. doesn't need BC
Make `$db_fields` and `$max_pages` public and remove magic methods.
See #30891.
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These commits were accidentally re-synced commits from develop.svn.wordpress.org due to a race condition. Thankfully, the history of this repository matters fairly little. It also happened only for trunk.
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