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Bootstrap/Load: Load plugin.php earlier in wp-settings.php

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In order to allow non-web initializations of WordPress (such as through wp-cli) to modify things like the check for maintenance mode, plugins.php and the associated functions must be available much earlier. The use of these functions earlier than the loading of plugins is not recommended in most use cases.

Fixes #36819. See #34936.
Props jorbin, danielbachhuber for documentation.


git-svn-id: https://develop.svn.wordpress.org/trunk@37588 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Aaron Jorbin
2016-05-27 19:19:12 +00:00
parent e890bfae0d
commit 13350c95e4
3 changed files with 130 additions and 2 deletions
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62
src/wp-includes/plugin.php
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@@ -946,3 +946,65 @@ function _wp_filter_build_unique_id($tag, $function, $priority) {
return $function[0] . '::' . $function[1];
}
}
/**
* Back up global variables used for actions and filters.
*
* Prevents redefinition of these globals in advanced-cache.php from accidentally
* destroying existing data.
*
* @since 4.6.0
* @access private
*
* @global array $wp_filter Stores all filters and actions.
* @global array $wp_actions Stores the amount of times an action was triggered.
* @global array $merged_filters Merges the filter hooks using this function.
* @global array $wp_current_filter Stores the list of current filters with the current one last.
* @staticvar array $backup_globals Backed up globals.
* @return array the staticvar from the first time it is set.
*/
function _backup_plugin_globals(){
global $wp_filter, $wp_actions, $merged_filters, $wp_current_filter;
static $backup_globals = array();
if ( empty( $backup_globals ) ) {
$backup_globals = array(
'backup_wp_filter' => $wp_filter,
'backup_wp_actions' => $wp_actions,
'backup_merged_filters' => $merged_filters,
'backup_wp_current_filter' => $wp_current_filter,
);
};
return $backup_globals;
}
/**
* Safely restore backed up global variables used for actions and filters.
*
* @since 4.6.0
* @access private
*
* @global array $wp_filter Stores all filters and actions.
* @global array $wp_actions Stores the amount of times an action was triggered.
* @global array $merged_filters Merges the filter hooks using this function.
* @global array $wp_current_filter Stores the list of current filters with the current one last.
* @staticvar array $backup_globals Backed up globals.
*/
function _restore_plugin_globals(){
global $wp_filter, $wp_actions, $merged_filters, $wp_current_filter;
$backup_globals = _backup_plugin_globals();
if ( $wp_filter !== $backup_globals['backup_wp_filter'] ){
$wp_filter = array_merge_recursive( $wp_filter, $backup_globals['backup_wp_filter'] );
}
if ( $wp_actions !== $backup_globals['backup_wp_actions'] ){
$wp_actions = array_merge_recursive( $wp_actions, $backup_globals['backup_wp_actions'] );
}
if ( $merged_filters !== $backup_globals['backup_merged_filters'] ){
$merged_filters = array_merge_recursive( $merged_filters, $backup_globals['backup_merged_filters'] );
}
if ( $wp_current_filter !== $backup_globals['backup_wp_current_filter'] ){
$wp_current_filter = array_merge_recursive( $wp_current_filter, $backup_globals['backup_wp_current_filter'] );
}
}