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}

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/**

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* Fires after WordPress core has been successfully updated.

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* @since 3.3.0

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* @param string $wp_version The current WordPress version.

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do_action( '_core_updated_successfully', $wp_version );

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// Clear the option that blocks auto-updates after failures, now that we've been successful.

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if ( function_exists( 'delete_site_option' ) ) {

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delete_site_option( 'auto_core_update_failed' );

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}

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return $wp_version;

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}

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/**

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* Preloads old Requests classes and interfaces.

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* This function preloads the old Requests code into memory before the

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* upgrade process deletes the files. Why? Requests code is loaded into

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* memory via an autoloader, meaning when a class or interface is needed

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* If a request is in process, Requests could attempt to access code. If

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* the file is not there, a fatal error could occur. If the file was

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* replaced, the new code is not compatible with the old, resulting in

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* a fatal error. Preloading ensures the code is in memory before the

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* code is updated.

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* @since 6.2.0

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* @global array $_old_requests_files Requests files to be preloaded.

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* @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass.

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* @global string $wp_version The WordPress version string.

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* @param string $to Path to old WordPress installation.

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function _preload_old_requests_classes_and_interfaces( $to ) {

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global $_old_requests_files, $wp_filesystem, $wp_version;

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* Requests was introduced in WordPress 4.6.

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* Skip preloading if the website was previously using

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* an earlier version of WordPress.

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if ( version_compare( $wp_version, '4.6', '<' ) ) {

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return;

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}

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if ( ! defined( 'REQUESTS_SILENCE_PSR0_DEPRECATIONS' ) ) {

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define( 'REQUESTS_SILENCE_PSR0_DEPRECATIONS', true );

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}

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foreach ( $_old_requests_files as $name => $file ) {

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// Skip files that aren't interfaces or classes.

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if ( is_int( $name ) ) {

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continue;

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}

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// Skip if it's already loaded.

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if ( class_exists( $name ) || interface_exists( $name ) ) {

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continue;

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}

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// Skip if the file is missing.

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if ( ! $wp_filesystem->is_file( $to . $file ) ) {

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continue;

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}

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require_once $to . $file;

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}

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}

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/**

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* Redirect to the About WordPress page after a successful upgrade.

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* This function is only needed when the existing installation is older than 3.4.0.

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* @since 3.3.0

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* @global string $wp_version The WordPress version string.

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* @global string $pagenow The filename of the current screen.

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* @global string $action

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* @param string $new_version

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function _redirect_to_about_wordpress( $new_version ) {

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global $wp_version, $pagenow, $action;

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if ( version_compare( $wp_version, '3.4-RC1', '>=' ) ) {

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return;

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}

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// Ensure we only run this on the update-core.php page. The Core_Upgrader may be used in other contexts.

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if ( 'update-core.php' !== $pagenow ) {

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return;

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}

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if ( 'do-core-upgrade' !== $action && 'do-core-reinstall' !== $action ) {

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return;

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}

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// Load the updated default text localization domain for new strings.

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load_default_textdomain();

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// See do_core_upgrade().

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show_message( __( 'WordPress updated successfully.' ) );

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// self_admin_url() won't exist when upgrading from <= 3.0, so relative URLs are intentional.

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show_message(

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'<span class="hide-if-no-js">' . sprintf(

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/* translators: 1: WordPress version, 2: URL to About screen. */

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__( 'Welcome to WordPress %1$s. You will be redirected to the About WordPress screen. If not, click <a href="%2$s">here</a>.' ),

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$new_version,

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'about.php?updated'

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) . '</span>'

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);

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show_message(

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'<span class="hide-if-js">' . sprintf(

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/* translators: 1: WordPress version, 2: URL to About screen. */

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__( 'Welcome to WordPress %1$s. <a href="%2$s">Learn more</a>.' ),

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$new_version,

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'about.php?updated'

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) . '</span>'

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);

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echo '</div>';

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window.location = 'about.php?updated';

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</script>

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<?php

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// Include admin-footer.php and exit.

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require_once ABSPATH . 'wp-admin/admin-footer.php';

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exit;

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}

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/**

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* Cleans up Genericons example files.

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* @since 4.2.2

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* @global array $wp_theme_directories

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* @global WP_Filesystem_Base $wp_filesystem

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function _upgrade_422_remove_genericons() {

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global $wp_theme_directories, $wp_filesystem;

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// A list of the affected files using the filesystem absolute paths.

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$affected_files = array();

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// Themes.

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foreach ( $wp_theme_directories as $directory ) {

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$affected_theme_files = _upgrade_422_find_genericons_files_in_folder( $directory );

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$affected_files = array_merge( $affected_files, $affected_theme_files );

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}

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// Plugins.

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$affected_plugin_files = _upgrade_422_find_genericons_files_in_folder( WP_PLUGIN_DIR );

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$affected_files = array_merge( $affected_files, $affected_plugin_files );

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foreach ( $affected_files as $file ) {

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$gen_dir = $wp_filesystem->find_folder( trailingslashit( dirname( $file ) ) );

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if ( empty( $gen_dir ) ) {

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continue;

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}

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// The path when the file is accessed via WP_Filesystem may differ in the case of FTP.

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$remote_file = $gen_dir . basename( $file );

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if ( ! $wp_filesystem->exists( $remote_file ) ) {

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continue;

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}

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if ( ! $wp_filesystem->delete( $remote_file, false, 'f' ) ) {

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$wp_filesystem->put_contents( $remote_file, '' );

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}

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}

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}

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/**

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* Recursively find Genericons example files in a given folder.

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* @ignore

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* @since 4.2.2

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* @param string $directory Directory path. Expects trailingslashed.

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* @return array

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function _upgrade_422_find_genericons_files_in_folder( $directory ) {

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$directory = trailingslashit( $directory );

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$files = array();

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if ( file_exists( "{$directory}example.html" )

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* Note: str_contains() is not used here, as this file is included

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* when updating from older WordPress versions, in which case

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* the polyfills from wp-includes/compat.php may not be available.

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&& false !== strpos( file_get_contents( "{$directory}example.html" ), '<title>Genericons</title>' )

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) {

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$files[] = "{$directory}example.html";

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}

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$dirs = glob( $directory . '*', GLOB_ONLYDIR );

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$dirs = array_filter(

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$dirs,

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static function ( $dir ) {

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* Skip any node_modules directories.

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* Note: str_contains() is not used here, as this file is included

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* when updating from older WordPress versions, in which case

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* the polyfills from wp-includes/compat.php may not be available.

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return false === strpos( $dir, 'node_modules' );

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}

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);

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if ( $dirs ) {

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foreach ( $dirs as $dir ) {

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$files = array_merge( $files, _upgrade_422_find_genericons_files_in_folder( $dir ) );

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}

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}

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return $files;

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}

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/**

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* @ignore

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* @since 4.4.0

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function _upgrade_440_force_deactivate_incompatible_plugins() {

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if ( defined( 'REST_API_VERSION' ) && version_compare( REST_API_VERSION, '2.0-beta4', '<=' ) ) {

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deactivate_plugins( array( 'rest-api/plugin.php' ), true );

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}

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}

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/**

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* @access private

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* @ignore

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* @since 5.8.0

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* @since 5.9.0 The minimum compatible version of Gutenberg is 11.9.

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* @since 6.1.1 The minimum compatible version of Gutenberg is 14.1.

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* @since 6.4.0 The minimum compatible version of Gutenberg is 16.5.

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* @since 6.5.0 The minimum compatible version of Gutenberg is 17.6.

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function _upgrade_core_deactivate_incompatible_plugins() {

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if ( defined( 'GUTENBERG_VERSION' ) && version_compare( GUTENBERG_VERSION, '17.6', '<' ) ) {

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$deactivated_gutenberg['gutenberg'] = array(

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'plugin_name' => 'Gutenberg',

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'version_deactivated' => GUTENBERG_VERSION,

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'version_compatible' => '17.6',

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);

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if ( is_plugin_active_for_network( 'gutenberg/gutenberg.php' ) ) {

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$deactivated_plugins = get_site_option( 'wp_force_deactivated_plugins', array() );

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$deactivated_plugins = array_merge( $deactivated_plugins, $deactivated_gutenberg );

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update_site_option( 'wp_force_deactivated_plugins', $deactivated_plugins );

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} else {

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$deactivated_plugins = get_option( 'wp_force_deactivated_plugins', array() );

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$deactivated_plugins = array_merge( $deactivated_plugins, $deactivated_gutenberg );

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update_option( 'wp_force_deactivated_plugins', $deactivated_plugins );

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}

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deactivate_plugins( array( 'gutenberg/gutenberg.php' ), true );

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}

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}

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