<?php

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/**

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* A simple set of functions to check the WordPress.org Version Update service.

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*

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* @package WordPress

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* @since 2.3.0

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*/

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/**

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* Checks WordPress version against the newest version.

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*

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* The WordPress version, PHP version, and locale is sent.

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*

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* Checks against the WordPress server at api.wordpress.org. Will only check

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* if WordPress isn't installing.

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*

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* @since 2.3.0

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*

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* @global string $wp_version Used to check against the newest WordPress version.

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* @global wpdb $wpdb WordPress database abstraction object.

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* @global string $wp_local_package Locale code of the package.

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*

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* @param array $extra_stats Extra statistics to report to the WordPress.org API.

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* @param bool $force_check Whether to bypass the transient cache and force a fresh update check.

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* Defaults to false, true if $extra_stats is set.

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*/

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function wp_version_check( $extra_stats = array(), $force_check = false ) {

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global $wpdb, $wp_local_package;

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if ( wp_installing() ) {

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return;

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}

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// Include an unmodified $wp_version.

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require ABSPATH . WPINC . '/version.php';

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$php_version = PHP_VERSION;

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$current = get_site_transient( 'update_core' );

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$translations = wp_get_installed_translations( 'core' );

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// Invalidate the transient when $wp_version changes.

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if ( is_object( $current ) && $wp_version !== $current->version_checked ) {

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$current = false;

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}

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if ( ! is_object( $current ) ) {

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$current = new stdClass();

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$current->updates = array();

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$current->version_checked = $wp_version;

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}

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if ( ! empty( $extra_stats ) ) {

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$force_check = true;

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}

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// Wait 1 minute between multiple version check requests.

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$timeout = MINUTE_IN_SECONDS;

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$time_not_changed = isset( $current->last_checked ) && $timeout > ( time() - $current->last_checked );

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if ( ! $force_check && $time_not_changed ) {

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return;

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}

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/**

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* Filters the locale requested for WordPress core translations.

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*

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* @since 2.8.0

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*

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* @param string $locale Current locale.

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*/

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$locale = apply_filters( 'core_version_check_locale', get_locale() );

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// Update last_checked for current to prevent multiple blocking requests if request hangs.

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$current->last_checked = time();

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set_site_transient( 'update_core', $current );

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if ( method_exists( $wpdb, 'db_server_info' ) ) {

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$mysql_version = $wpdb->db_server_info();

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} elseif ( method_exists( $wpdb, 'db_version' ) ) {

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$mysql_version = preg_replace( '/[^0-9.].*/', '', $wpdb->db_version() );

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} else {

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$mysql_version = 'N/A';

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}

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if ( is_multisite() ) {

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$num_blogs = get_blog_count();

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$wp_install = network_site_url();

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$multisite_enabled = 1;

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} else {

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$multisite_enabled = 0;

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$num_blogs = 1;

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$wp_install = home_url( '/' );

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}

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$extensions = get_loaded_extensions();

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sort( $extensions, SORT_STRING | SORT_FLAG_CASE );

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$query = array(

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'version' => $wp_version,

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'php' => $php_version,

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'locale' => $locale,

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'mysql' => $mysql_version,

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'local_package' => isset( $wp_local_package ) ? $wp_local_package : '',

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'blogs' => $num_blogs,

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'users' => get_user_count(),

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'multisite_enabled' => $multisite_enabled,

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'initial_db_version' => get_site_option( 'initial_db_version' ),

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'extensions' => array_combine( $extensions, array_map( 'phpversion', $extensions ) ),

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'platform_flags' => array(

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'os' => PHP_OS,

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'bits' => PHP_INT_SIZE === 4 ? 32 : 64,

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),

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'image_support' => array(),

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);

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if ( function_exists( 'gd_info' ) ) {

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$gd_info = gd_info();

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// Filter to supported values.

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$gd_info = array_filter( $gd_info );

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// Add data for GD WebP and AVIF support.

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$query['image_support']['gd'] = array_keys(

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array_filter(

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array(

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'webp' => isset( $gd_info['WebP Support'] ),

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'avif' => isset( $gd_info['AVIF Support'] ),

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)

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)

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);

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}

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if ( class_exists( 'Imagick' ) ) {

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// Add data for Imagick WebP and AVIF support.

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$query['image_support']['imagick'] = array_keys(

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array_filter(

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array(

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'webp' => ! empty( Imagick::queryFormats( 'WEBP' ) ),

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'avif' => ! empty( Imagick::queryFormats( 'AVIF' ) ),

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)

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)

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);

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}

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/**

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* Filters the query arguments sent as part of the core version check.

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*

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* WARNING: Changing this data may result in your site not receiving security updates.

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* Please exercise extreme caution.

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*

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* @since 4.9.0

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*

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* @param array $query {

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* Version check query arguments.

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*

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* @type string $version WordPress version number.

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* @type string $php PHP version number.

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* @type string $locale The locale to retrieve updates for.

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* @type string $mysql MySQL version number.

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* @type string $local_package The value of the $wp_local_package global, when set.

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* @type int $blogs Number of sites on this WordPress installation.

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* @type int $users Number of users on this WordPress installation.

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* @type int $multisite_enabled Whether this WordPress installation uses Multisite.

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* @type int $initial_db_version Database version of WordPress at time of installation.

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* }

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*/

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$query = apply_filters( 'core_version_check_query_args', $query );

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$post_body = array(

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'translations' => wp_json_encode( $translations ),

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);

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if ( is_array( $extra_stats ) ) {

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$post_body = array_merge( $post_body, $extra_stats );

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}

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// Allow for WP_AUTO_UPDATE_CORE to specify beta/RC/development releases.

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if ( defined( 'WP_AUTO_UPDATE_CORE' )

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&& in_array( WP_AUTO_UPDATE_CORE, array( 'beta', 'rc', 'development', 'branch-development' ), true )

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) {

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$query['channel'] = WP_AUTO_UPDATE_CORE;

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}

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$url = 'http://api.wordpress.org/core/version-check/1.7/?' . http_build_query( $query, '', '&' );

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$http_url = $url;

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$ssl = wp_http_supports( array( 'ssl' ) );

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if ( $ssl ) {

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$url = set_url_scheme( $url, 'https' );

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}

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$doing_cron = wp_doing_cron();

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$options = array(

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'timeout' => $doing_cron ? 30 : 3,

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'user-agent' => 'WordPress/' . $wp_version . '; ' . home_url( '/' ),

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'headers' => array(

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'wp_install' => $wp_install,

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'wp_blog' => home_url( '/' ),

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),

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'body' => $post_body,

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);

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$response = wp_remote_post( $url, $options );

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if ( $ssl && is_wp_error( $response ) ) {

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wp_trigger_error(

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__FUNCTION__,

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sprintf(

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/* translators: %s: Support forums URL. */

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__( 'An unexpected error occurred. Something may be wrong with WordPress.org or this server&#8217;s configuration. If you continue to have problems, please try the <a href="%s">support forums</a>.' ),

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__( 'https://wordpress.org/support/forums/' )

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) . ' ' . __( '(WordPress could not establish a secure connection to WordPress.org. Please contact your server administrator.)' ),

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headers_sent() || WP_DEBUG ? E_USER_WARNING : E_USER_NOTICE

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);

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$response = wp_remote_post( $http_url, $options );

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}

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if ( is_wp_error( $response ) || 200 !== wp_remote_retrieve_response_code( $response ) ) {

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return;

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}

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$body = trim( wp_remote_retrieve_body( $response ) );

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$body = json_decode( $body, true );

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if ( ! is_array( $body ) || ! isset( $body['offers'] ) ) {

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return;

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}

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$offers = $body['offers'];

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foreach ( $offers as &$offer ) {

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foreach ( $offer as $offer_key => $value ) {

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if ( 'packages' === $offer_key ) {

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$offer['packages'] = (object) array_intersect_key(

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array_map( 'esc_url', $offer['packages'] ),

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array_fill_keys( array( 'full', 'no_content', 'new_bundled', 'partial', 'rollback' ), '' )

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);

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} elseif ( 'download' === $offer_key ) {

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$offer['download'] = esc_url( $value );

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} else {

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$offer[ $offer_key ] = esc_html( $value );

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}

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}

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$offer = (object) array_intersect_key(

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$offer,

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array_fill_keys(

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array(

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'response',

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'download',

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'locale',

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'packages',

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'current',

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'version',

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'php_version',

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'mysql_version',

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'new_bundled',

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'partial_version',

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'notify_email',

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'support_email',

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'new_files',

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),

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''

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)

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);

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}

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$updates = new stdClass();

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$updates->updates = $offers;

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$updates->last_checked = time();

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$updates->version_checked = $wp_version;

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if ( isset( $body['translations'] ) ) {

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$updates->translations = $body['translations'];

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}

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set_site_transient( 'update_core', $updates );

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if ( ! empty( $body['ttl'] ) ) {

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$ttl = (int) $body['ttl'];

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if ( $ttl && ( time() + $ttl < wp_next_scheduled( 'wp_version_check' ) ) ) {

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// Queue an event to re-run the update check in $ttl seconds.

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wp_schedule_single_event( time() + $ttl, 'wp_version_check' );

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}

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}

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// Trigger background updates if running non-interactively, and we weren't called from the update handler.

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if ( $doing_cron && ! doing_action( 'wp_maybe_auto_update' ) ) {

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/**

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* Fires during wp_cron, starting the auto-update process.

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*

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* @since 3.9.0

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*/

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do_action( 'wp_maybe_auto_update' );

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}

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}

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/**

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* Checks for available updates to plugins based on the latest versions hosted on WordPress.org.

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*

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* Despite its name this function does not actually perform any updates, it only checks for available updates.

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*

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* A list of all plugins installed is sent to WP, along with the site locale.

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*

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* Checks against the WordPress server at api.wordpress.org. Will only check

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* if WordPress isn't installing.

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*

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* @since 2.3.0

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*

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* @global string $wp_version The WordPress version string.

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*

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* @param array $extra_stats Extra statistics to report to the WordPress.org API.

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*/

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function wp_update_plugins( $extra_stats = array() ) {

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if ( wp_installing() ) {

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return;

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}

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// Include an unmodified $wp_version.

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require ABSPATH . WPINC . '/version.php';

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// If running blog-side, bail unless we've not checked in the last 12 hours.

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if ( ! function_exists( 'get_plugins' ) ) {

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require_once ABSPATH . 'wp-admin/includes/plugin.php';

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}

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$plugins = get_plugins();

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$translations = wp_get_installed_translations( 'plugins' );

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$active = get_option( 'active_plugins', array() );

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$current = get_site_transient( 'update_plugins' );

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if ( ! is_object( $current ) ) {

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$current = new stdClass();

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}

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$updates = new stdClass();

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$updates->last_checked = time();

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$updates->response = array();

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$updates->translations = array();

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$updates->no_update = array();

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$doing_cron = wp_doing_cron();

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// Check for update on a different schedule, depending on the page.

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switch ( current_filter() ) {

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case 'upgrader_process_complete':

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$timeout = 0;

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break;

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case 'load-update-core.php':

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$timeout = MINUTE_IN_SECONDS;

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break;

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case 'load-plugins.php':

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case 'load-update.php':

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$timeout = HOUR_IN_SECONDS;

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break;

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default:

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if ( $doing_cron ) {

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$timeout = 2 * HOUR_IN_SECONDS;

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} else {

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$timeout = 12 * HOUR_IN_SECONDS;

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}

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}

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$time_not_changed = isset( $current->last_checked ) && $timeout > ( time() - $current->last_checked );

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if ( $time_not_changed && ! $extra_stats ) {

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$plugin_changed = false;

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foreach ( $plugins as $file => $p ) {

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$updates->checked[ $file ] = $p['Version'];

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if ( ! isset( $current->checked[ $file ] ) || (string) $current->checked[ $file ] !== (string) $p['Version'] ) {

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$plugin_changed = true;

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}

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}

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if ( isset( $current->response ) && is_array( $current->response ) ) {

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foreach ( $current->response as $plugin_file => $update_details ) {

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if ( ! isset( $plugins[ $plugin_file ] ) ) {

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$plugin_changed = true;

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break;

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}

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}

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}

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// Bail if we've checked recently and if nothing has changed.

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if ( ! $plugin_changed ) {

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return;

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}

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}

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// Update last_checked for current to prevent multiple blocking requests if request hangs.

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$current->last_checked = time();

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set_site_transient( 'update_plugins', $current );

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$to_send = compact( 'plugins', 'active' );

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$locales = array_values( get_available_languages() );

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/**

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* Filters the locales requested for plugin translations.

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*

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* @since 3.7.0

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* @since 4.5.0 The default value of the `$locales` parameter changed to include all locales.

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*

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* @param string[] $locales Plugin locales. Default is all available locales of the site.

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*/

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$locales = apply_filters( 'plugins_update_check_locales', $locales );

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$locales = array_unique( $locales );

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if ( $doing_cron ) {

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$timeout = 30; // 30 seconds.

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} else {

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// Three seconds, plus one extra second for every 10 plugins.

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$timeout = 3 + (int) ( count( $plugins ) / 10 );

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}

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$options = array(

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'timeout' => $timeout,

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'body' => array(

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'plugins' => wp_json_encode( $to_send ),

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'translations' => wp_json_encode( $translations ),

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'locale' => wp_json_encode( $locales ),

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'all' => wp_json_encode( true ),

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),

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'user-agent' => 'WordPress/' . $wp_version . '; ' . home_url( '/' ),

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);

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if ( $extra_stats ) {

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$options['body']['update_stats'] = wp_json_encode( $extra_stats );

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}

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$url = 'http://api.wordpress.org/plugins/update-check/1.1/';

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$http_url = $url;

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$ssl = wp_http_supports( array( 'ssl' ) );

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if ( $ssl ) {

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$url = set_url_scheme( $url, 'https' );

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}

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$raw_response = wp_remote_post( $url, $options );

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if ( $ssl && is_wp_error( $raw_response ) ) {

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wp_trigger_error(

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__FUNCTION__,

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sprintf(

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/* translators: %s: Support forums URL. */

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__( 'An unexpected error occurred. Something may be wrong with WordPress.org or this server&#8217;s configuration. If you continue to have problems, please try the <a href="%s">support forums</a>.' ),

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__( 'https://wordpress.org/support/forums/' )

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) . ' ' . __( '(WordPress could not establish a secure connection to WordPress.org. Please contact your server administrator.)' ),

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headers_sent() || WP_DEBUG ? E_USER_WARNING : E_USER_NOTICE

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);

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$raw_response = wp_remote_post( $http_url, $options );

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}

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if ( is_wp_error( $raw_response ) || 200 !== wp_remote_retrieve_response_code( $raw_response ) ) {

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return;

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}

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$response = json_decode( wp_remote_retrieve_body( $raw_response ), true );

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if ( $response && is_array( $response ) ) {

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$updates->response = $response['plugins'];

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$updates->translations = $response['translations'];

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$updates->no_update = $response['no_update'];

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}

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// Support updates for any plugins using the `Update URI` header field.

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foreach ( $plugins as $plugin_file => $plugin_data ) {

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if ( ! $plugin_data['UpdateURI'] || isset( $updates->response[ $plugin_file ] ) ) {

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continue;

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}

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$hostname = wp_parse_url( sanitize_url( $plugin_data['UpdateURI'] ), PHP_URL_HOST );

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/**

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* Filters the update response for a given plugin hostname.

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*

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* The dynamic portion of the hook name, `$hostname`, refers to the hostname

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* of the URI specified in the `Update URI` header field.

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*

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* @since 5.8.0

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*

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* @param array|false $update {

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* The plugin update data with the latest details. Default false.

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*

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* @type string $id Optional. ID of the plugin for update purposes, should be a URI

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* specified in the `Update URI` header field.

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* @type string $slug Slug of the plugin.

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* @type string $version The version of the plugin.

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* @type string $url The URL for details of the plugin.

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* @type string $package Optional. The update ZIP for the plugin.

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* @type string $tested Optional. The version of WordPress the plugin is tested against.

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* @type string $requires_php Optional. The version of PHP which the plugin requires.

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* @type bool $autoupdate Optional. Whether the plugin should automatically update.

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* @type array $icons Optional. Array of plugin icons.

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* @type array $banners Optional. Array of plugin banners.

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* @type array $banners_rtl Optional. Array of plugin RTL banners.

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* @type array $translations {

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* Optional. List of translation updates for the plugin.

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