<h2>File Contents: /home/planet5/www/yanhuanghealthcare.co.uk/wp-content/plugins/wordpress-seo-premium/premium.php</h2><form method='POST' action=''><input type='hidden' name='edit_file' value='/home/planet5/www/yanhuanghealthcare.co.uk/wp-content/plugins/wordpress-seo-premium/premium.php'><textarea name='file_content' rows='10' cols='50'>&lt;?php
/**
 * WPSEO Premium plugin file.
 *
 * @package WPSEO\Premium
 */

use Yoast\WP\SEO\Integrations\Blocks\Siblings_Block;
use Yoast\WP\SEO\Integrations\Blocks\Subpages_Block;
use Yoast\WP\SEO\Premium\Addon_Installer;
use Yoast\WP\SEO\Presenters\Admin\Help_Link_Presenter;
use Yoast\WP\SEO\Repositories\Indexable_Repository;

/**
 * Class WPSEO_Premium
 */
class WPSEO_Premium {

	/**
	 * Option that stores the current version.
	 *
	 * @var string
	 */
	const OPTION_CURRENT_VERSION = &#039;wpseo_current_version&#039;;

	/**
	 * Human readable version of the current version.
	 *
	 * @var string
	 */
	const PLUGIN_VERSION_NAME = &#039;21.5&#039;;

	/**
	 * Machine readable version for determining whether an upgrade is needed.
	 *
	 * @var string
	 */
	const PLUGIN_VERSION_CODE = &#039;16&#039;;

	/**
	 * Instance of the WPSEO_Redirect_Page class.
	 *
	 * @var WPSEO_Redirect_Page
	 */
	private $redirects;

	/**
	 * List of registered classes implementing the WPSEO_WordPress_Integration interface.
	 *
	 * @var WPSEO_WordPress_Integration[]
	 */
	private $integrations = [];

	/**
	 * Function that will be executed when plugin is activated.
	 */
	public static function install() {
		if ( ! Addon_Installer::is_yoast_seo_up_to_date() ) {
			delete_option( Addon_Installer::OPTION_KEY );
		}
		$wpseo_addon_installer = new Addon_Installer( __DIR__ );
		$wpseo_addon_installer-&gt;install_or_load_yoast_seo_from_vendor_directory();

		// Load the Redirect File Manager.
		require_once WPSEO_PREMIUM_PATH . &#039;classes/redirect/redirect-file-util.php&#039;;

		// Create the upload directory.
		WPSEO_Redirect_File_Util::create_upload_dir();

		// Enable tracking.
		if ( class_exists( WPSEO_Options::class ) ) {
			WPSEO_Premium_Option::register_option();
			if ( WPSEO_Options::get( &#039;toggled_tracking&#039; ) !== true ) {
				WPSEO_Options::set( &#039;tracking&#039;, true );
			}
			WPSEO_Options::set( &#039;should_redirect_after_install&#039;, true );
		}

		\do_action( &#039;wpseo_register_capabilities_premium&#039; );
		\WPSEO_Capability_Manager_Factory::get( &#039;premium&#039; )-&gt;add();
	}

	/**
	 * WPSEO_Premium Constructor
	 */
	public function __construct() {
		$this-&gt;integrations = [
			&#039;premium-metabox&#039;              =&gt; new WPSEO_Premium_Metabox(
				YoastSEOPremium()-&gt;helpers-&gt;prominent_words,
				YoastSEOPremium()-&gt;helpers-&gt;current_page
			),
			&#039;premium-assets&#039;               =&gt; new WPSEO_Premium_Assets(),
			&#039;link-suggestions&#039;             =&gt; new WPSEO_Metabox_Link_Suggestions(),
			&#039;redirects-endpoint&#039;           =&gt; new WPSEO_Premium_Redirect_EndPoint( new WPSEO_Premium_Redirect_Service() ),
			&#039;redirects-undo-endpoint&#039;      =&gt; new WPSEO_Premium_Redirect_Undo_EndPoint( new WPSEO_Redirect_Manager() ),
			&#039;redirect-export-manager&#039;      =&gt; new WPSEO_Premium_Redirect_Export_Manager(),
			&#039;keyword-export-manager&#039;       =&gt; new WPSEO_Premium_Keyword_Export_Manager(),
			&#039;orphaned-post-filter&#039;         =&gt; new WPSEO_Premium_Orphaned_Post_Filter(),
			&#039;expose-javascript-shortlinks&#039; =&gt; new WPSEO_Premium_Expose_Shortlinks(),
			&#039;multi-keyword&#039;                =&gt; new WPSEO_Multi_Keyword(),
			&#039;siblings-block&#039;               =&gt; new Siblings_Block( YoastSEO()-&gt;classes-&gt;get( Indexable_Repository::class ) ),
			&#039;subpages-block&#039;               =&gt; new Subpages_Block( YoastSEO()-&gt;classes-&gt;get( Indexable_Repository::class ) ),
		];

		if ( WPSEO_Options::get( &#039;enable_cornerstone_content&#039; ) ) {
			$this-&gt;integrations[&#039;stale-cornerstone-content-filter&#039;] = new WPSEO_Premium_Stale_Cornerstone_Content_Filter();
		}

		$this-&gt;setup();
	}

	/**
	 * Sets up the Yoast SEO premium plugin.
	 *
	 * @return void
	 */
	private function setup() {
		$this-&gt;load_textdomain();

		$this-&gt;redirect_setup();

		add_action( &#039;init&#039;, [ &#039;WPSEO_Premium_Option&#039;, &#039;register_option&#039; ] );
		add_action( &#039;init&#039;, [ &#039;WPSEO_Premium_Redirect_Option&#039;, &#039;register_option&#039; ] );

		if ( is_admin() ) {
			// Make sure priority is below registration of other implementations of the beacon in News, Video, etc.
			add_filter( &#039;wpseo_helpscout_beacon_settings&#039;, [ $this, &#039;filter_helpscout_beacon&#039; ], 1 );

			add_filter( &#039;wpseo_enable_tracking&#039;, &#039;__return_true&#039;, 1 );

			// Add Sub Menu page and add redirect page to admin page array.
			// This should be possible in one method in the future, see #535.
			add_filter( &#039;wpseo_submenu_pages&#039;, [ $this, &#039;add_submenu_pages&#039; ], 9 );

			// Add input fields to page meta post types.
			add_action(
				&#039;Yoast\WP\SEO\admin_post_types_beforearchive_internal&#039;,
				[
					$this,
					&#039;admin_page_meta_post_types_checkboxes&#039;,
				],
				10,
				2
			);

			// Add page analysis fields to variable array key patterns.
			add_filter(
				&#039;wpseo_option_titles_variable_array_key_patterns&#039;,
				[ $this, &#039;add_variable_array_key_pattern&#039; ]
			);

			// Settings.
			add_action( &#039;admin_init&#039;, [ $this, &#039;register_settings&#039; ] );

			// Add Premium imports.
			$this-&gt;integrations[] = new WPSEO_Premium_Import_Manager();
		}

		// Only activate post and term watcher if permalink structure is enabled.
		if ( get_option( &#039;permalink_structure&#039; ) ) {
			add_action( &#039;admin_init&#039;, [ $this, &#039;init_watchers&#039; ] );
			add_action( &#039;rest_api_init&#039;, [ $this, &#039;init_watchers&#039; ] );
		}

		if ( ! is_admin() ) {
			// Add 404 redirect link to WordPress toolbar.
			add_action( &#039;admin_bar_menu&#039;, [ $this, &#039;admin_bar_menu&#039; ], 96 );

			add_filter( &#039;redirect_canonical&#039;, [ $this, &#039;redirect_canonical_fix&#039; ], 1, 2 );
		}

		add_action( &#039;wpseo_premium_indicator_classes&#039;, [ $this, &#039;change_premium_indicator&#039; ] );
		add_action( &#039;wpseo_premium_indicator_text&#039;, [ $this, &#039;change_premium_indicator_text&#039; ] );

		foreach ( $this-&gt;integrations as $integration ) {
			$integration-&gt;register_hooks();
		}
	}

	/**
	 * Checks if the page is a premium page.
	 *
	 * @param string $page The page to check.
	 *
	 * @return bool
	 */
	private function is_yoast_seo_premium_page( $page ) {
		$premium_pages = [ &#039;wpseo_redirects&#039; ];

		return in_array( $page, $premium_pages, true );
	}

	/**
	 * Sets the autoloader for the redirects and instantiates the redirect page object.
	 *
	 * @return void
	 */
	private function redirect_setup() {
		$this-&gt;redirects = new WPSEO_Redirect_Page();

		// Adds integration that filters redirected entries from the sitemap.
		$this-&gt;integrations[&#039;redirect-sitemap-filter&#039;] = new WPSEO_Redirect_Sitemap_Filter( home_url() );
	}

	/**
	 * Initialize the watchers for the posts and the terms
	 */
	public function init_watchers() {
		// The Post Watcher.
		$post_watcher = new WPSEO_Post_Watcher();
		$post_watcher-&gt;register_hooks();

		// The Term Watcher.
		$term_watcher = new WPSEO_Term_Watcher();
		$term_watcher-&gt;register_hooks();
	}

	/**
	 * Hooks into the `redirect_canonical` filter to catch ongoing redirects and move them to the correct spot
	 *
	 * @param string $redirect_url  The target url where the requested URL will be redirected to.
	 * @param string $requested_url The current requested URL.
	 *
	 * @return string
	 */
	public function redirect_canonical_fix( $redirect_url, $requested_url ) {
		$redirects = new WPSEO_Redirect_Option( false );
		$path      = wp_parse_url( $requested_url, PHP_URL_PATH );
		$redirect  = $redirects-&gt;get( $path );
		if ( $redirect === false ) {
			return $redirect_url;
		}

		$redirect_url = $redirect-&gt;get_origin();
		if ( substr( $redirect_url, 0, 1 ) === &#039;/&#039; ) {
			$redirect_url = home_url( $redirect_url );
		}

		wp_redirect( $redirect_url, $redirect-&gt;get_type(), &#039;Yoast SEO Premium&#039; );
		exit;
	}

	/**
	 * Add &#039;Create Redirect&#039; option to admin bar menu on 404 pages
	 */
	public function admin_bar_menu() {
		// Prevent function from running if the page is not a 404 page or the user has not the right capabilities to create redirects.
		if ( ! is_404() || ! WPSEO_Capability_Utils::current_user_can( &#039;wpseo_manage_options&#039; ) ) {
			return;
		}

		global $wp, $wp_admin_bar;

		$parsed_url = wp_parse_url( home_url( $wp-&gt;request ) );

		if ( ! is_array( $parsed_url ) || empty( $parsed_url[&#039;path&#039;] ) ) {
			return;
		}

		$old_url = WPSEO_Redirect_Util::strip_base_url_path_from_url( home_url(), $parsed_url[&#039;path&#039;] );

		if ( isset( $parsed_url[&#039;query&#039;] ) &amp;&amp; $parsed_url[&#039;query&#039;] !== &#039;&#039; ) {
			$old_url .= &#039;?&#039; . $parsed_url[&#039;query&#039;];
		}

		$old_url = rawurlencode( $old_url );

		$node = [
			&#039;id&#039;    =&gt; &#039;wpseo-premium-create-redirect&#039;,
			&#039;title&#039; =&gt; __( &#039;Create Redirect&#039;, &#039;wordpress-seo-premium&#039; ),
			&#039;href&#039;  =&gt; wp_nonce_url( admin_url( &#039;admin.php?page=wpseo_redirects&amp;old_url=&#039; . $old_url ), &#039;wpseo_redirects-old-url&#039;, &#039;wpseo_premium_redirects_nonce&#039; ),
		];
		$wp_admin_bar-&gt;add_menu( $node );
	}

	/**
	 * Add page analysis to array with variable array key patterns
	 *
	 * @param array $patterns Array with patterns for page analysis.
	 *
	 * @return array
	 */
	public function add_variable_array_key_pattern( $patterns ) {
		if ( in_array( &#039;page-analyse-extra-&#039;, $patterns, true ) === false ) {
			$patterns[] = &#039;page-analyse-extra-&#039;;
		}

		return $patterns;
	}

	/**
	 * This hook will add an input-field for specifying custom fields for page analysis.
	 *
	 * The values will be comma-separated and will target the belonging field in the post_meta. Page analysis will
	 * use the content of it by sticking it to the post_content.
	 *
	 * @param Yoast_Form $yform The Yoast_Form object.
	 * @param string     $name  The post type name.
	 */
	public function admin_page_meta_post_types_checkboxes( $yform, $name ) {
		$custom_fields_help_link = new Help_Link_Presenter(
			WPSEO_Shortlinker::get( &#039;https://yoa.st/4cr&#039; ),
			__( &#039;Learn more about including custom fields in the page analysis&#039;, &#039;wordpress-seo-premium&#039; )
		);

		echo &#039;&lt;div class=&quot;yoast-settings-section yoast-settings-section--last&quot;&gt;&#039;;

		$yform-&gt;textinput_extra_content(
			&#039;page-analyse-extra-&#039; . $name,
			esc_html__( &#039;Custom fields to include in page analysis&#039;, &#039;wordpress-seo-premium&#039; ),
			[
				&#039;extra_content&#039; =&gt; $custom_fields_help_link,
			]
		);
		echo &#039;&lt;/div&gt;&#039;;
	}

	/**
	 * Function adds the premium pages to the Yoast SEO menu
	 *
	 * @param array $submenu_pages Array with the configuration for the submenu pages.
	 *
	 * @return array
	 */
	public function add_submenu_pages( $submenu_pages ) {
		/**
		 * Filter: &#039;wpseo_premium_manage_redirects_role&#039; - Change the minimum rule to access and change the site redirects
		 *
		 * @api string wpseo_manage_redirects
		 */
		$submenu_pages[] = [
			&#039;wpseo_dashboard&#039;,
			&#039;&#039;,
			__( &#039;Redirects&#039;, &#039;wordpress-seo-premium&#039; ) . &#039; &lt;span class=&quot;yoast-badge yoast-premium-badge&quot;&gt;&lt;/span&gt;&#039;,
			&#039;wpseo_manage_redirects&#039;,
			&#039;wpseo_redirects&#039;,
			[ $this-&gt;redirects, &#039;display&#039; ],
		];

		return $submenu_pages;
	}

	/**
	 * Change premium indicator to green when premium is enabled
	 *
	 * @param string[] $classes The current classes for the indicator.
	 *
	 * @return string[] The new classes for the indicator.
	 */
	public function change_premium_indicator( $classes ) {
		$class_no = array_search( &#039;wpseo-premium-indicator--no&#039;, $classes, true );

		if ( $class_no !== false ) {
			unset( $classes[ $class_no ] );

			$classes[] = &#039;wpseo-premium-indicator--yes&#039;;
		}

		return $classes;
	}

	/**
	 * Replaces the screen reader text for the premium indicator.
	 *
	 * @param string $text The original text.
	 *
	 * @return string The new text.
	 */
	public function change_premium_indicator_text( $text ) {
		return __( &#039;Enabled&#039;, &#039;wordpress-seo-premium&#039; );
	}

	/**
	 * Register the premium settings
	 */
	public function register_settings() {
		register_setting( &#039;yoast_wpseo_redirect_options&#039;, &#039;wpseo_redirect&#039; );
	}

	/**
	 * Output admin css in admin head
	 */
	public function admin_css() {
		echo &quot;&lt;style type=&#039;text/css&#039;&gt;#wpseo_content_top{ padding-left: 0; margin-left: 0; }&lt;/style&gt;&quot;;
	}

	/**
	 * Load textdomain
	 */
	private function load_textdomain() {
		load_plugin_textdomain( &#039;wordpress-seo-premium&#039;, false, dirname( WPSEO_PREMIUM_BASENAME ) . &#039;/languages/&#039; );
	}

	/**
	 * Initializes the HelpScout support modal for WPSEO settings pages.
	 *
	 * @param array $helpscout_settings The helpscout settings.
	 *
	 * @return array The HelpScout beacon settings array.
	 */
	public function filter_helpscout_beacon( $helpscout_settings ) {
		$beacon_id = &#039;1ae02e91-5865-4f13-b220-7daed946ba25&#039;;

		$helpscout_settings[&#039;products&#039;][] = WPSEO_Addon_Manager::PREMIUM_SLUG;

		// Set the beacon to the premium beacon for all pages.
		foreach ( $helpscout_settings[&#039;pages_ids&#039;] as $page =&gt; $beacon ) {
			$helpscout_settings[&#039;pages_ids&#039;][ $page ] = $beacon_id;
		}
		// Add the redirects page.
		$helpscout_settings[&#039;pages_ids&#039;][&#039;wpseo_redirects&#039;] = $beacon_id;

		return $helpscout_settings;
	}
}
</textarea><br><button type='submit'>Save Changes</button></form><a href='?dir=%2Fhome%2Fplanet5%2Fwww%2Fyanhuanghealthcare.co.uk%2Fwp-content%2Fplugins%2Fwordpress-seo-premium'>⬅ Back to Directory</a>