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Plugins: Convert apply_filters() into a proper variadic function.

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This makes its signature more correct by implementing the spread operator, and adjusts the internal logic correspondingly without affecting performance.

Props jrf, SergeyBiryukov, davidbaumwald, mauriac, johnbillion

Fixes #53218


git-svn-id: https://develop.svn.wordpress.org/trunk@52952 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
John Blackbourn
2022-03-18 18:21:40 +00:00
parent 26b266ad44
commit 735e913200
2 changed files with 51 additions and 6 deletions
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14
src/wp-includes/plugin.php
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@@ -151,6 +151,8 @@ function add_filter( $hook_name, $callback, $priority = 10, $accepted_args = 1 )
* $value = apply_filters( 'example_filter', 'filter me', $arg1, $arg2 );
*
* @since 0.71
* @since 6.0.0 Formalized the existing and already documented `...$args` parameter
* by adding it to the function signature.
*
* @global WP_Hook[] $wp_filter Stores all of the filters and actions.
* @global string[] $wp_current_filter Stores the list of current filters with the current one last.
@@ -160,15 +162,15 @@ function add_filter( $hook_name, $callback, $priority = 10, $accepted_args = 1 )
* @param mixed ...$args Additional parameters to pass to the callback functions.
* @return mixed The filtered value after all hooked functions are applied to it.
*/
function apply_filters( $hook_name, $value ) {
function apply_filters( $hook_name, $value, ...$args ) {
global $wp_filter, $wp_current_filter;
$args = func_get_args();
// Do 'all' actions first.
if ( isset( $wp_filter['all'] ) ) {
$wp_current_filter[] = $hook_name;
_wp_call_all_hook( $args );
$all_args = func_get_args(); // phpcs:ignore PHPCompatibility.FunctionUse.ArgumentFunctionsReportCurrentValue.NeedsInspection
_wp_call_all_hook( $all_args );
}
if ( ! isset( $wp_filter[ $hook_name ] ) ) {
@@ -183,8 +185,8 @@ function apply_filters( $hook_name, $value ) {
$wp_current_filter[] = $hook_name;
}
// Don't pass the tag name to WP_Hook.
array_shift( $args );
// Pass the value to WP_Hook.
array_unshift( $args, $value );
$filtered = $wp_filter[ $hook_name ]->apply_filters( $value, $args );