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<?php /** * @package WPSEO\Frontend */
/** * Main frontend class for WordPress SEO, responsible for the SEO output as well as removing * default WordPress output. */ class WPSEO_Frontend {
/** * @var object Instance of this class */ public static $instance;
/** * @var array Holds the plugins options. */ public $options = array();
/** * @var boolean Boolean indicating wether output buffering has been started */ private $ob_started = false;
/** * Holds the canonical URL for the current page * * @var string */ private $canonical = null;
/** * Holds the canonical URL for the current page that cannot be overriden by a manual canonical input * * @var string */ private $canonical_no_override = null;
/** * Holds the canonical URL for the current page without pagination * * @var string */ private $canonical_unpaged = null;
/** * Holds the pages meta description * * @var string */ private $metadesc = null;
/** * Holds the generated title for the page * * @var string */ private $title = null;
/** * Class constructor * * Adds and removes a lot of filters. */ protected function __construct() {
$this->options = WPSEO_Options::get_all();
add_action( 'wp_head', array( $this, 'front_page_specific_init' ), 0 ); add_action( 'wp_head', array( $this, 'head' ), 1 );
// The head function here calls action wpseo_head, to which we hook all our functionality add_action( 'wpseo_head', array( $this, 'debug_marker' ), 2 ); add_action( 'wpseo_head', array( $this, 'robots' ), 6 ); add_action( 'wpseo_head', array( $this, 'metadesc' ), 10 ); add_action( 'wpseo_head', array( $this, 'metakeywords' ), 11 ); add_action( 'wpseo_head', array( $this, 'canonical' ), 20 ); add_action( 'wpseo_head', array( $this, 'adjacent_rel_links' ), 21 ); add_action( 'wpseo_head', array( $this, 'publisher' ), 22 );
// Remove actions that we will handle through our wpseo_head call, and probably change the output of remove_action( 'wp_head', 'rel_canonical' ); remove_action( 'wp_head', 'index_rel_link' ); remove_action( 'wp_head', 'start_post_rel_link' ); remove_action( 'wp_head', 'adjacent_posts_rel_link_wp_head' ); remove_action( 'wp_head', 'noindex', 1 );
add_filter( 'wp_title', array( $this, 'title' ), 15, 3 ); add_filter( 'thematic_doctitle', array( $this, 'title' ), 15 );
add_action( 'wp', array( $this, 'page_redirect' ), 99 );
add_action( 'template_redirect', array( $this, 'noindex_feed' ) );
add_filter( 'loginout', array( $this, 'nofollow_link' ) ); add_filter( 'register', array( $this, 'nofollow_link' ) );
// Fix the WooThemes woo_title() output add_filter( 'woo_title', array( $this, 'fix_woo_title' ), 99 );
if ( $this->options['hide-rsdlink'] === true ) { remove_action( 'wp_head', 'rsd_link' ); } if ( $this->options['hide-wlwmanifest'] === true ) { remove_action( 'wp_head', 'wlwmanifest_link' ); } if ( $this->options['hide-shortlink'] === true ) { remove_action( 'wp_head', 'wp_shortlink_wp_head' ); remove_action( 'template_redirect', 'wp_shortlink_header', 11 ); } if ( $this->options['hide-feedlinks'] === true ) { // @todo: add option to display just normal feed and hide comment feed. remove_action( 'wp_head', 'feed_links', 2 ); remove_action( 'wp_head', 'feed_links_extra', 3 ); }
if ( ( $this->options['disable-date'] === true || $this->options['disable-author'] === true ) || ( isset( $this->options['disable-post_formats'] ) && $this->options['disable-post_formats'] ) ) { add_action( 'wp', array( $this, 'archive_redirect' ) ); } if ( $this->options['redirectattachment'] === true ) { add_action( 'template_redirect', array( $this, 'attachment_redirect' ), 1 ); } if ( $this->options['trailingslash'] === true ) { add_filter( 'user_trailingslashit', array( $this, 'add_trailingslash' ), 10, 2 ); } if ( $this->options['cleanpermalinks'] === true ) { add_action( 'template_redirect', array( $this, 'clean_permalink' ), 1 ); } if ( $this->options['cleanreplytocom'] === true ) { add_filter( 'comment_reply_link', array( $this, 'remove_reply_to_com' ) ); add_action( 'template_redirect', array( $this, 'replytocom_redirect' ), 1 ); } add_filter( 'the_content_feed', array( $this, 'embed_rssfooter' ) ); add_filter( 'the_excerpt_rss', array( $this, 'embed_rssfooter_excerpt' ) );
if ( $this->options['forcerewritetitle'] === true ) { add_action( 'template_redirect', array( $this, 'force_rewrite_output_buffer' ), 99999 ); add_action( 'wp_footer', array( $this, 'flush_cache' ), - 1 ); }
if ( $this->options['title_test'] > 0 ) { add_filter( 'wpseo_title', array( $this, 'title_test_helper' ) ); } }
/** * Initialize the functions that only need to run on the frontpage */ public function front_page_specific_init() { if ( ! is_front_page() ) { return; }
new WPSEO_JSON_LD; add_action( 'wpseo_head', array( $this, 'webmaster_tools_authentication' ), 90 ); }
/** * Resets the entire class so canonicals, titles etc can be regenerated. */ public function reset() { foreach ( get_class_vars( __CLASS__ ) as $name => $default ) { if ( $name == 'instance' ) { self::$instance = null; } else { $this->$name = $default; } } $this->options = WPSEO_Options::get_all(); }
/** * Get the singleton instance of this class * * @return WPSEO_Frontend */ public static function get_instance() { if ( ! ( self::$instance instanceof self ) ) { self::$instance = new self(); }
return self::$instance; }
/** * Override Woo's title with our own. * * @param string $title * * @return string */ public function fix_woo_title( $title ) { return $this->title( $title ); }
/** * Determine whether this is the homepage and shows posts. * * @return bool */ public function is_home_posts_page() { return ( is_home() && 'posts' == get_option( 'show_on_front' ) ); }
/** * Determine whether the this is the static frontpage. * * @return bool */ public function is_home_static_page() { return ( is_front_page() && 'page' == get_option( 'show_on_front' ) && is_page( get_option( 'page_on_front' ) ) ); }
/** * Determine whether this is the posts page, when it's not the frontpage. * * @return bool */ public function is_posts_page() { return ( is_home() && 'page' == get_option( 'show_on_front' ) ); }
/** * Used for static home and posts pages as well as singular titles. * * @param object|null $object if filled, object to get the title for * * @return string */ public function get_content_title( $object = null ) { if ( is_null( $object ) ) { $object = $GLOBALS['wp_query']->get_queried_object(); }
$title = WPSEO_Meta::get_value( 'title', $object->ID );
if ( $title !== '' ) { return wpseo_replace_vars( $title, $object ); }
$post_type = ( isset( $object->post_type ) ? $object->post_type : $object->query_var );
return $this->get_title_from_options( 'title-' . $post_type, $object ); }
/** * Used for category, tag, and tax titles. * * @return string */ public function get_taxonomy_title() { $object = $GLOBALS['wp_query']->get_queried_object();
$title = WPSEO_Taxonomy_Meta::get_term_meta( $object, $object->taxonomy, 'title' );
if ( is_string( $title ) && $title !== '' ) { return wpseo_replace_vars( $title, $object ); } else { return $this->get_title_from_options( 'title-tax-' . $object->taxonomy, $object ); } }
/** * Used for author titles. * * @return string */ public function get_author_title() { $author_id = get_query_var( 'author' ); $title = trim( get_the_author_meta( 'wpseo_title', $author_id ) );
if ( $title !== '' ) { return wpseo_replace_vars( $title, array() ); }
return $this->get_title_from_options( 'title-author-wpseo' ); }
/** * Simple function to use to pull data from $options. * * All titles pulled from options will be run through the wpseo_replace_vars function. * * @param string $index name of the page to get the title from the settings for. * @param object|array $var_source possible object to pull variables from. * * @return string */ public function get_title_from_options( $index, $var_source = array() ) { if ( ! isset( $this->options[ $index ] ) || $this->options[ $index ] === '' ) { if ( is_singular() ) { return wpseo_replace_vars( '%%title%% %%sep%% %%sitename%%', $var_source ); } else { return ''; } } else { return wpseo_replace_vars( $this->options[ $index ], $var_source ); } }
/** * Get the default title for the current page. * * This is the fallback title generator used when a title hasn't been set for the specific content, taxonomy, author * details, or in the options. It scrubs off any present prefix before or after the title (based on $seplocation) in * order to prevent duplicate seperations from appearing in the title (this happens when a prefix is supplied to the * wp_title call on singular pages). * * @param string $sep the separator used between variables * @param string $seplocation Whether the separator should be left or right. * @param string $title possible title that's already set * * @return string */ public function get_default_title( $sep, $seplocation, $title = '' ) { if ( 'right' == $seplocation ) { $regex = '`\s*' . preg_quote( trim( $sep ), '`' ) . '\s*`u'; } else { $regex = '`^\s*' . preg_quote( trim( $sep ), '`' ) . '\s*`u'; } $title = preg_replace( $regex, '', $title );
if ( ! is_string( $title ) || ( is_string( $title ) && $title === '' ) ) { $title = get_bloginfo( 'name' ); $title = $this->add_paging_to_title( $sep, $seplocation, $title ); $title = $this->add_to_title( $sep, $seplocation, $title, strip_tags( get_bloginfo( 'description' ) ) );
return $title; }
$title = $this->add_paging_to_title( $sep, $seplocation, $title ); $title = $this->add_to_title( $sep, $seplocation, $title, strip_tags( get_bloginfo( 'name' ) ) );
return $title; }
/** * This function adds paging details to the title. * * @param string $sep separator used in the title * @param string $seplocation Whether the separator should be left or right. * @param string $title the title to append the paging info to * * @return string */ public function add_paging_to_title( $sep, $seplocation, $title ) { global $wp_query;
if ( ! empty( $wp_query->query_vars['paged'] ) && $wp_query->query_vars['paged'] > 1 ) { return $this->add_to_title( $sep, $seplocation, $title, $wp_query->query_vars['paged'] . '/' . $wp_query->max_num_pages ); }
return $title; }
/** * Add part to title, while ensuring that the $seplocation variable is respected. * * @param string $sep separator used in the title * @param string $seplocation Whether the separator should be left or right. * @param string $title the title to append the title_part to * @param string $title_part the part to append to the title * * @return string */ public function add_to_title( $sep, $seplocation, $title, $title_part ) { if ( 'right' === $seplocation ) { return $title . $sep . $title_part; }
return $title_part . $sep . $title; }
/** * Main title function. * * @param string $title Title that might have already been set. * @param string $separator Separator determined in theme (unused) * @param string $separator_location Whether the separator should be left or right. * * @return string */ public function title( $title, $separator = '', $separator_location = '' ) { if ( is_null( $this->title ) ) { $this->title = $this->generate_title( $title, $separator_location ); }
return $this->title; }
/** * Main title generation function. * * @param string $title Title that might have already been set. * @param string $separator_location Whether the separator should be left or right. * * @return string */ private function generate_title( $title, $separator_location ) {
if ( is_feed() ) { return $title; }
$separator = wpseo_replace_vars( '%%sep%%', array() ); $separator = ' ' . trim( $separator ) . ' ';
if ( '' === trim( $separator_location ) ) { $separator_location = ( is_rtl() ) ? 'left' : 'right'; }
// This needs to be kept track of in order to generate // default titles for singular pages. $original_title = $title;
// This flag is used to determine if any additional // processing should be done to the title after the // main section of title generation completes. $modified_title = true;
// This variable holds the page-specific title part // that is used to generate default titles. $title_part = '';
if ( $this->is_home_static_page() ) { $title = $this->get_content_title(); } elseif ( $this->is_home_posts_page() ) { $title = $this->get_title_from_options( 'title-home-wpseo' ); } elseif ( $this->is_posts_page() ) { $title = $this->get_content_title( get_post( get_option( 'page_for_posts' ) ) ); } elseif ( is_singular() ) { $title = $this->get_content_title();
if ( ! is_string( $title ) || '' === $title ) { $title_part = $original_title; } } elseif ( is_search() ) { $title = $this->get_title_from_options( 'title-search-wpseo' );
if ( ! is_string( $title ) || '' === $title ) { $title_part = sprintf( __( 'Search for "%s"', 'wordpress-seo' ), esc_html( get_search_query() ) ); } } elseif ( is_category() || is_tag() || is_tax() ) { $title = $this->get_taxonomy_title();
if ( ! is_string( $title ) || '' === $title ) { if ( is_category() ) { $title_part = single_cat_title( '', false ); } elseif ( is_tag() ) { $title_part = single_tag_title( '', false ); } else { $title_part = single_term_title( '', false ); if ( $title_part === '' ) { $term = $GLOBALS['wp_query']->get_queried_object(); $title_part = $term->name; } } } } elseif ( is_author() ) { $title = $this->get_author_title();
if ( ! is_string( $title ) || '' === $title ) { $title_part = get_the_author_meta( 'display_name', get_query_var( 'author' ) ); } } elseif ( is_post_type_archive() ) { $post_type = get_query_var( 'post_type' );
if ( is_array( $post_type ) ) { $post_type = reset( $post_type ); }
$title = $this->get_title_from_options( 'title-ptarchive-' . $post_type );
if ( ! is_string( $title ) || '' === $title ) { $post_type_obj = get_post_type_object( $post_type ); if ( isset( $post_type_obj->labels->menu_name ) ) { $title_part = $post_type_obj->labels->menu_name; } elseif ( isset( $post_type_obj->name ) ) { $title_part = $post_type_obj->name; } else { $title_part = ''; // To be determined what this should be } } } elseif ( is_archive() ) { $title = $this->get_title_from_options( 'title-archive-wpseo' );
// @todo [JRF => Yoast] Should these not use the archive default if no title found ? // WPSEO_Options::get_default( 'wpseo_titles', 'title-archive-wpseo' ) // Replacement would be needed! if ( empty( $title ) ) { if ( is_month() ) { $title_part = sprintf( __( '%s Archives', 'wordpress-seo' ), single_month_title( ' ', false ) ); } elseif ( is_year() ) { $title_part = sprintf( __( '%s Archives', 'wordpress-seo' ), get_query_var( 'year' ) ); } elseif ( is_day() ) { $title_part = sprintf( __( '%s Archives', 'wordpress-seo' ), get_the_date() ); } else { $title_part = __( 'Archives', 'wordpress-seo' ); } } } elseif ( is_404() ) {
if ( 0 !== get_query_var( 'year' ) || ( 0 !== get_query_var( 'monthnum' ) || 0 !== get_query_var( 'day' ) ) ) { // @todo [JRF => Yoast] Should these not use the archive default if no title found ? if ( 0 !== get_query_var( 'day' ) ) { $date = sprintf( '%04d-%02d-%02d 00:00:00', get_query_var( 'year' ), get_query_var( 'monthnum' ), get_query_var( 'day' ) ); $date = mysql2date( get_option( 'date_format' ), $date, true ); $date = apply_filters( 'get_the_date', $date, '' ); $title_part = sprintf( __( '%s Archives', 'wordpress-seo' ), $date ); } elseif ( 0 !== get_query_var( 'monthnum' ) ) { $title_part = sprintf( __( '%s Archives', 'wordpress-seo' ), single_month_title( ' ', false ) ); } elseif ( 0 !== get_query_var( 'year' ) ) { $title_part = sprintf( __( '%s Archives', 'wordpress-seo' ), get_query_var( 'year' ) ); } else { $title_part = __( 'Archives', 'wordpress-seo' ); } } else { $title = $this->get_title_from_options( 'title-404-wpseo' );
// @todo [JRF => Yoast] Should these not use the 404 default if no title found ? // WPSEO_Options::get_default( 'wpseo_titles', 'title-404-wpseo' ) // Replacement would be needed! if ( empty( $title ) ) { $title_part = __( 'Page not found', 'wordpress-seo' ); } } } else { // In case the page type is unknown, leave the title alone. $modified_title = false;
// If you would like to generate a default title instead, // the following code could be used instead of the line above: // $title_part = $title; }
if ( ( $modified_title && empty( $title ) ) || ! empty( $title_part ) ) { $title = $this->get_default_title( $separator, $separator_location, $title_part ); }
if ( defined( 'ICL_LANGUAGE_CODE' ) && false !== strpos( $title, ICL_LANGUAGE_CODE ) ) { $title = str_replace( ' @' . ICL_LANGUAGE_CODE, '', $title ); }
/** * Filter: 'wpseo_title' - Allow changing the WP SEO <title> output * * @api string $title The page title being put out. */
return esc_html( strip_tags( stripslashes( apply_filters( 'wpseo_title', $title ) ) ) ); }
/** * Function used when title needs to be force overridden. * * @return string */ function force_wp_title() { global $wp_query; $old_wp_query = null;
if ( ! $wp_query->is_main_query() ) { $old_wp_query = $wp_query; wp_reset_query(); }
$title = $this->title( '' );
if ( ! empty( $old_wp_query ) ) { $GLOBALS['wp_query'] = $old_wp_query; unset( $old_wp_query ); }
return $title; }
/** * Outputs or returns the debug marker, which is also used for title replacement when force rewrite is active. * * @param bool $echo Whether or not to echo the debug marker. * * @return string */ public function debug_marker( $echo = true ) { $marker = '<!-- This site is optimized with the ' . $this->head_product_name() . ' v' . WPSEO_VERSION . ' - https://yoast.com/wordpress/plugins/seo/ -->'; if ( $echo === false ) { return $marker; } else { echo "\n${marker}\n"; } }
/** * Output Webmaster Tools authentication strings */ public function webmaster_tools_authentication() { // Alexa if ( $this->options['alexaverify'] !== '' ) { echo '<meta name="alexaVerifyID" content="' . esc_attr( $this->options['alexaverify'] ) . "\" />\n"; }
// Bing if ( $this->options['msverify'] !== '' ) { echo '<meta name="msvalidate.01" content="' . esc_attr( $this->options['msverify'] ) . "\" />\n"; }
// Google if ( $this->options['googleverify'] !== '' ) { echo '<meta name="google-site-verification" content="' . esc_attr( $this->options['googleverify'] ) . "\" />\n"; }
// Pinterest if ( $this->options['pinterestverify'] !== '' ) { echo '<meta name="p:domain_verify" content="' . esc_attr( $this->options['pinterestverify'] ) . "\" />\n"; }
// Yandex if ( $this->options['yandexverify'] !== '' ) { echo '<meta name="yandex-verification" content="' . esc_attr( $this->options['yandexverify'] ) . "\" />\n"; } }
/** * Main wrapper function attached to wp_head. This combines all the output on the frontend of the WP SEO plugin. */ public function head() { global $wp_query;
$old_wp_query = null;
if ( ! $wp_query->is_main_query() ) { $old_wp_query = $wp_query; wp_reset_query(); }
/** * Action: 'wpseo_head' - Allow other plugins to output inside the WP SEO section of the head section. */ do_action( 'wpseo_head' );
echo '<!-- / ', $this->head_product_name(), ". -->\n\n";
if ( ! empty( $old_wp_query ) ) { $GLOBALS['wp_query'] = $old_wp_query; unset( $old_wp_query ); }
return; }
/** * Output the meta robots value. * * @return string */ public function robots() { global $wp_query;
$robots = array(); $robots['index'] = 'index'; $robots['follow'] = 'follow'; $robots['other'] = array();
if ( is_singular() ) { global $post;
if ( is_object( $post ) && ( isset( $this->options[ 'noindex-' . $post->post_type ] ) && $this->options[ 'noindex-' . $post->post_type ] === true ) ) { $robots['index'] = 'noindex'; }
if ( 'private' == $post->post_status ) { $robots['index'] = 'noindex'; }
$robots = $this->robots_for_single_post( $robots );
} else { if ( is_search() ) { $robots['index'] = 'noindex'; } elseif ( is_tax() || is_tag() || is_category() ) { $term = $wp_query->get_queried_object(); if ( is_object( $term ) && ( isset( $this->options[ 'noindex-tax-' . $term->taxonomy ] ) && $this->options[ 'noindex-tax-' . $term->taxonomy ] === true ) ) { $robots['index'] = 'noindex'; }
// Three possible values, index, noindex and default, do nothing for default $term_meta = WPSEO_Taxonomy_Meta::get_term_meta( $term, $term->taxonomy, 'noindex' ); if ( is_string( $term_meta ) && 'default' !== $term_meta ) { $robots['index'] = $term_meta; } } elseif ( ( is_author() && $this->options['noindex-author-wpseo'] === true ) || ( is_date() && $this->options['noindex-archive-wpseo'] === true ) ) { $robots['index'] = 'noindex'; } elseif ( is_home() ) { if ( get_query_var( 'paged' ) > 1 && $this->options['noindex-subpages-wpseo'] === true ) { $robots['index'] = 'noindex'; }
$page_for_posts = get_option( 'page_for_posts' ); if ( $page_for_posts ) { $robots = $this->robots_for_single_post( $robots, $page_for_posts ); } unset( $page_for_posts );
} elseif ( is_post_type_archive() ) { $post_type = get_query_var( 'post_type' );
if ( is_array( $post_type ) ) { $post_type = reset( $post_type ); }
if ( isset( $this->options[ 'noindex-ptarchive-' . $post_type ] ) && $this->options[ 'noindex-ptarchive-' . $post_type ] === true ) { $robots['index'] = 'noindex'; } }
if ( isset( $wp_query->query_vars['paged'] ) && ( $wp_query->query_vars['paged'] && $wp_query->query_vars['paged'] > 1 ) && ( $this->options['noindex-subpages-wpseo'] === true ) ) { $robots['index'] = 'noindex'; $robots['follow'] = 'follow'; }
foreach ( array( 'noodp', 'noydir' ) as $robot ) { if ( $this->options[ $robot ] === true ) { $robots['other'][] = $robot; } } unset( $robot ); }
// Force override to respect the WP settings if ( '0' == get_option( 'blog_public' ) || isset( $_GET['replytocom'] ) ) { $robots['index'] = 'noindex'; }
$robotsstr = $robots['index'] . ',' . $robots['follow'];
if ( $robots['other'] !== array() ) { $robots['other'] = array_unique( $robots['other'] ); // most likely no longer needed, needs testing $robotsstr .= ',' . implode( ',', $robots['other'] ); }
$robotsstr = preg_replace( '`^index,follow,?`', '', $robotsstr );
/** * Filter: 'wpseo_robots' - Allows filtering of the meta robots output of WP SEO * * @api string $robotsstr The meta robots directives to be echoed. */ $robotsstr = apply_filters( 'wpseo_robots', $robotsstr );
if ( is_string( $robotsstr ) && $robotsstr !== '' ) { echo '<meta name="robots" content="', esc_attr( $robotsstr ), '"/>', "\n"; }
return $robotsstr; }
/** * Determine $robots values for a single post * * @param array $robots * @param int|string $post_id The post ID for which to determine the $robots values, defaults to current post * * @return array */ public function robots_for_single_post( $robots, $post_id = 0 ) { $noindex = WPSEO_Meta::get_value( 'meta-robots-noindex', $post_id ); if ( $noindex === '1' ) { $robots['index'] = 'noindex'; } elseif ( $noindex === '2' ) { $robots['index'] = 'index'; }
if ( WPSEO_Meta::get_value( 'meta-robots-nofollow', $post_id ) === '1' ) { $robots['follow'] = 'nofollow'; }
$meta_robots_adv = WPSEO_Meta::get_value( 'meta-robots-adv', $post_id );
if ( $meta_robots_adv !== '' && ( $meta_robots_adv !== '-' && $meta_robots_adv !== 'none' ) ) { $meta_robots_adv = explode( ',', $meta_robots_adv ); foreach ( $meta_robots_adv as $robot ) { $robots['other'][] = $robot; } unset( $robot ); } elseif ( $meta_robots_adv === '' || $meta_robots_adv === '-' ) { foreach ( array( 'noodp', 'noydir' ) as $robot ) { if ( $this->options[ $robot ] === true ) { $robots['other'][] = $robot; } } unset( $robot ); } unset( $meta_robots_adv );
return $robots; }
/** * This function normally outputs the canonical but is also used in other places to retrieve * the canonical URL for the current page. * * @param bool $echo Whether or not to output the canonical element. * @param bool $un_paged Whether or not to return the canonical with or without pagination added to the URL. * @param bool $no_override Whether or not to return a manually overridden canonical * * @return string $canonical */ public function canonical( $echo = true, $un_paged = false, $no_override = false ) { if ( is_null( $this->canonical ) ) { $this->generate_canonical(); }
$canonical = $this->canonical;
if ( $un_paged ) { $canonical = $this->canonical_unpaged; } elseif ( $no_override ) { $canonical = $this->canonical_no_override; }
if ( $echo === false ) { return $canonical; }
if ( is_string( $canonical ) && '' !== $canonical ) { echo '<link rel="canonical" href="' . esc_url( $canonical, null, 'other' ) . '" />' . "\n"; } }
/** * This function normally outputs the canonical but is also used in other places to retrieve * the canonical URL for the current page. * * @return void */ private function generate_canonical() { $canonical = false; $canonical_override = false;
// Set decent canonicals for homepage, singulars and taxonomy pages if ( is_singular() ) { $obj = get_queried_object(); $canonical = get_permalink( $obj->ID );
$this->canonical_unpaged = $canonical;
$canonical_override = WPSEO_Meta::get_value( 'canonical' );
// Fix paginated pages canonical, but only if the page is truly paginated. if ( get_query_var( 'page' ) > 1 ) { $num_pages = ( substr_count( $obj->post_content, '<!--nextpage-->' ) + 1 ); if ( $num_pages && get_query_var( 'page' ) <= $num_pages ) { if ( ! $GLOBALS['wp_rewrite']->using_permalinks() ) { $canonical = add_query_arg( 'page', get_query_var( 'page' ), $canonical ); } else { $canonical = user_trailingslashit( trailingslashit( $canonical ) . get_query_var( 'page' ) ); } } } } else { if ( is_search() ) { $canonical = get_search_link(); } elseif ( is_front_page() ) { $canonical = home_url(); } elseif ( $this->is_posts_page() ) { $canonical = get_permalink( get_option( 'page_for_posts' ) ); } elseif ( is_tax() || is_tag() || is_category() ) { $term = get_queried_object();
$canonical_override = WPSEO_Taxonomy_Meta::get_term_meta( $term, $term->taxonomy, 'canonical' );
$canonical = get_term_link( $term, $term->taxonomy ); } elseif ( is_post_type_archive() ) { $post_type = get_query_var( 'post_type' ); if ( is_array( $post_type ) ) { $post_type = reset( $post_type ); } $canonical = get_post_type_archive_link( $post_type ); } elseif ( is_author() ) { $canonical = get_author_posts_url( get_query_var( 'author' ), get_query_var( 'author_name' ) ); } elseif ( is_archive() ) { if ( is_date() ) { if ( is_day() ) { $canonical = get_day_link( get_query_var( 'year' ), get_query_var( 'monthnum' ), get_query_var( 'day' ) ); } elseif ( is_month() ) { $canonical = get_month_link( get_query_var( 'year' ), get_query_var( 'monthnum' ) ); } elseif ( is_year() ) { $canonical = get_year_link( get_query_var( 'year' ) ); } } }
$this->canonical_unpaged = $canonical;
if ( $canonical && get_query_var( 'paged' ) > 1 ) { global $wp_rewrite; if ( ! $wp_rewrite->using_permalinks() ) { if ( is_front_page() ) { $canonical = trailingslashit( $canonical ); } $canonical = add_query_arg( 'paged', get_query_var( 'paged' ), $canonical ); } else { if ( is_front_page() ) { $canonical = wpseo_xml_sitemaps_base_url( '' ); } $canonical = user_trailingslashit( trailingslashit( $canonical ) . trailingslashit( $wp_rewrite->pagination_base ) . get_query_var( 'paged' ) ); } } }
$this->canonical_no_override = $canonical;
if ( is_string( $canonical ) && $canonical !== '' ) { // Force canonical links to be absolute, relative is NOT an option. if ( WPSEO_Utils::is_url_relative( $canonical ) === true ) { $canonical = $this->base_url( $canonical ); } }
/** * Filter: 'wpseo_canonical' - Allow filtering of the canonical URL put out by WP SEO * * @api string $canonical The canonical URL */ $canonical = apply_filters( 'wpseo_canonical', $canonical );
if ( is_string( $canonical_override ) && $canonical_override !== '' ) { $this->canonical = $canonical_override; } else { $this->canonical = $canonical; } }
/** * Parse the home URL setting to find the base URL for relative URLs. * * @param string $path * * @return string */ private function base_url( $path = null ) { $url = get_option( 'home' );
$parts = parse_url( $url );
$base_url = trailingslashit( $parts['scheme'] . '://' . $parts['host'] );
if ( ! is_null( $path ) ) { $base_url .= ltrim( $path, '/' ); }
return $base_url; }
/** * Adds 'prev' and 'next' links to archives. * * @link http://googlewebmastercentral.blogspot.com/2011/09/pagination-with-relnext-and-relprev.html * @since 1.0.3 */ public function adjacent_rel_links() { // Don't do this for Genesis, as the way Genesis handles homepage functionality is different and causes issues sometimes. /** * Filter 'wpseo_genesis_force_adjacent_rel_home' - Allows devs to allow echoing rel="next" / rel="prev" by WP SEO on Genesis installs * * @api bool $unsigned Whether or not to rel=next / rel=prev */ if ( is_home() && function_exists( 'genesis' ) && apply_filters( 'wpseo_genesis_force_adjacent_rel_home', false ) === false ) { return; }
global $wp_query;
if ( ! is_singular() ) { $url = $this->canonical( false, true, true );
if ( is_string( $url ) && $url !== '' ) { $paged = get_query_var( 'paged' );
if ( 0 == $paged ) { $paged = 1; }
if ( $paged == 2 ) { $this->adjacent_rel_link( 'prev', $url, ( $paged - 1 ), true ); }
// Make sure to use index.php when needed, done after paged == 2 check so the prev links to homepage will not have index.php erroneously. if ( is_front_page() ) { $url = wpseo_xml_sitemaps_base_url( '' ); }
if ( $paged > 2 ) { $this->adjacent_rel_link( 'prev', $url, ( $paged - 1 ), true ); }
if ( $paged < $wp_query->max_num_pages ) { $this->adjacent_rel_link( 'next', $url, ( $paged + 1 ), true ); } } } else { $numpages = 0; if ( isset( $wp_query->post->post_content ) ) { $numpages = ( substr_count( $wp_query->post->post_content, '<!--nextpage-->' ) + 1 ); } if ( $numpages > 1 ) { $page = get_query_var( 'page' ); if ( ! $page ) { $page = 1; }
$url = get_permalink( $wp_query->post->ID );
// If the current page is the frontpage, pagination should use /base/ if ( $this->is_home_static_page() ) { $usebase = true; } else { $usebase = false; }
if ( $page > 1 ) { $this->adjacent_rel_link( 'prev', $url, ( $page - 1 ), $usebase, 'single_paged' ); } if ( $page < $numpages ) { $this->adjacent_rel_link( 'next', $url, ( $page + 1 ), $usebase, 'single_paged' ); } } } }
/** * Get adjacent pages link for archives * * @since 1.0.2 * * @param string $rel Link relationship, prev or next. * @param string $url the un-paginated URL of the current archive. * @param string $page the page number to add on to $url for the $link tag. * @param boolean $incl_pagination_base whether or not to include /page/ or not. * * @return void */ private function adjacent_rel_link( $rel, $url, $page, $incl_pagination_base ) { global $wp_rewrite; if ( ! $wp_rewrite->using_permalinks() ) { if ( $page > 1 ) { $url = add_query_arg( 'paged', $page, $url ); } } else { if ( $page > 1 ) { $base = ''; if ( $incl_pagination_base ) { $base = trailingslashit( $wp_rewrite->pagination_base ); } $url = user_trailingslashit( trailingslashit( $url ) . $base . $page ); } } /** * Filter: 'wpseo_' . $rel . '_rel_link' - Allow changing link rel output by WP SEO * * @api string $unsigned The full `<link` element. */ $link = apply_filters( 'wpseo_' . $rel . '_rel_link', '<link rel="' . esc_attr( $rel ) . '" href="' . esc_url( $url ) . "\" />\n" );
if ( is_string( $link ) && $link !== '' ) { echo $link; } }
/** * Output the rel=publisher code on every page of the site. * * @return boolean Boolean indicating whether the publisher link was printed */ public function publisher() {
if ( $this->options['plus-publisher'] !== '' ) { echo '<link rel="publisher" href="', esc_url( $this->options['plus-publisher'] ), '"/>', "\n";
return true; }
return false; }
/** * Outputs the meta keywords element. * * @return void */ public function metakeywords() { global $wp_query, $post;
if ( $this->options['usemetakeywords'] === false ) { return; }
$keywords = '';
if ( is_singular() ) { $keywords = WPSEO_Meta::get_value( 'metakeywords' ); if ( $keywords === '' && ( is_object( $post ) && ( ( isset( $this->options[ 'metakey-' . $post->post_type ] ) && $this->options[ 'metakey-' . $post->post_type ] !== '' ) ) ) ) { $keywords = wpseo_replace_vars( $this->options[ 'metakey-' . $post->post_type ], $post ); } } else { if ( $this->is_home_posts_page() && $this->options['metakey-home-wpseo'] !== '' ) { $keywords = wpseo_replace_vars( $this->options['metakey-home-wpseo'], array() ); } elseif ( $this->is_home_static_page() ) { $keywords = WPSEO_Meta::get_value( 'metakeywords' ); if ( $keywords === '' && ( is_object( $post ) && ( isset( $this->options[ 'metakey-' . $post->post_type ] ) && $this->options[ 'metakey-' . $post->post_type ] !== '' ) ) ) { $keywords = wpseo_replace_vars( $this->options[ 'metakey-' . $post->post_type ], $post ); } } elseif ( is_category() || is_tag() || is_tax() ) { $term = $wp_query->get_queried_object();
if ( is_object( $term ) ) { $keywords = WPSEO_Taxonomy_Meta::get_term_meta( $term, $term->taxonomy, 'metakey' ); if ( ( ! is_string( $keywords ) || $keywords === '' ) && ( isset( $this->options[ 'metakey-tax-' . $term->taxonomy ] ) && $this->options[ 'metakey-tax-' . $term->taxonomy ] !== '' ) ) { $keywords = wpseo_replace_vars( $this->options[ 'metakey-tax-' . $term->taxonomy ], $term ); } } } elseif ( is_author() ) { $author_id = get_query_var( 'author' ); $keywords = get_the_author_meta( 'metakey', $author_id ); if ( ! $keywords && $this->options['metakey-author-wpseo'] !== '' ) { $keywords = wpseo_replace_vars( $this->options['metakey-author-wpseo'], $wp_query->get_queried_object() ); } } elseif ( is_post_type_archive() ) { $post_type = get_query_var( 'post_type' ); if ( is_array( $post_type ) ) { $post_type = reset( $post_type ); } if ( isset( $this->options[ 'metakey-ptarchive-' . $post_type ] ) && $this->options[ 'metakey-ptarchive-' . $post_type ] !== '' ) { $keywords = wpseo_replace_vars( $this->options[ 'metakey-ptarchive-' . $post_type ], $wp_query->get_queried_object() ); } } }
$keywords = apply_filters( 'wpseo_metakey', trim( $keywords ) ); // make deprecated
/** * Filter: 'wpseo_metakeywords' - Allow changing the WP SEO meta keywords * * @api string $keywords The meta keywords to be echoed. */ $keywords = apply_filters( 'wpseo_metakeywords', trim( $keywords ) ); // more appropriately named
if ( is_string( $keywords ) && $keywords !== '' ) { echo '<meta name="keywords" content="', esc_attr( strip_tags( stripslashes( $keywords ) ) ), '"/>', "\n"; } }
/** * Outputs the meta description element or returns the description text. * * @param bool $echo * * @return string */ public function metadesc( $echo = true ) { if ( is_null( $this->metadesc ) ) { $this->generate_metadesc(); }
if ( $echo !== false ) { if ( is_string( $this->metadesc ) && $this->metadesc !== '' ) { echo '<meta name="description" content="', esc_attr( strip_tags( stripslashes( $this->metadesc ) ) ), '"/>', "\n"; } elseif ( current_user_can( 'manage_options' ) && is_singular() ) { echo '<!-- ', __( 'Admin only notice: this page doesn\'t show a meta description because it doesn\'t have one, either write it for this page specifically or go into the SEO -> Titles menu and set up a template.', 'wordpress-seo' ), ' -->', "\n"; } } else { return $this->metadesc; } }
/** * Generates the meta description text. */ private function generate_metadesc() { global $post, $wp_query;
$metadesc = ''; $metadesc_override = false; $post_type = ''; $template = '';
if ( is_object( $post ) && ( isset( $post->post_type ) && $post->post_type !== '' ) ) { $post_type = $post->post_type; }
if ( is_singular() ) { if ( ( $metadesc === '' && $post_type !== '' ) && isset( $this->options[ 'metadesc-' . $post_type ] ) ) { $template = $this->options[ 'metadesc-' . $post_type ]; $term = $post; } $metadesc_override = WPSEO_Meta::get_value( 'metadesc' ); } else { if ( is_search() ) { $metadesc = ''; } elseif ( $this->is_home_posts_page() ) { $template = $this->options['metadesc-home-wpseo']; $term = array();
if ( empty( $template ) ) { $template = get_bloginfo( 'description' ); } } elseif ( $this->is_posts_page() ) { $metadesc = WPSEO_Meta::get_value( 'metadesc', get_option( 'page_for_posts' ) ); if ( ( $metadesc === '' && $post_type !== '' ) && isset( $this->options[ 'metadesc-' . $post_type ] ) ) { $page = get_post( get_option( 'page_for_posts' ) ); $template = $this->options[ 'metadesc-' . $post_type ]; $term = $page; } } elseif ( $this->is_home_static_page() ) { $metadesc = WPSEO_Meta::get_value( 'metadesc' ); if ( ( $metadesc === '' && $post_type !== '' ) && isset( $this->options[ 'metadesc-' . $post_type ] ) ) { $template = $this->options[ 'metadesc-' . $post_type ]; } } elseif ( is_category() || is_tag() || is_tax() ) { $term = $wp_query->get_queried_object(); $metadesc_override = WPSEO_Taxonomy_Meta::get_term_meta( $term, $term->taxonomy, 'desc' ); if ( is_object( $term ) && isset( $term->taxonomy, $this->options[ 'metadesc-tax-' . $term->taxonomy ] ) ) { $template = $this->options[ 'metadesc-tax-' . $term->taxonomy ]; } } elseif ( is_author() ) { $author_id = get_query_var( 'author' ); $metadesc = get_the_author_meta( 'wpseo_metadesc', $author_id ); if ( ( ! is_string( $metadesc ) || $metadesc === '' ) && '' !== $this->options['metadesc-author-wpseo'] ) { $template = $this->options['metadesc-author-wpseo']; } } elseif ( is_post_type_archive() ) { $post_type = get_query_var( 'post_type' ); if ( is_array( $post_type ) ) { $post_type = reset( $post_type ); } if ( isset( $this->options[ 'metadesc-ptarchive-' . $post_type ] ) ) { $template = $this->options[ 'metadesc-ptarchive-' . $post_type ]; } } elseif ( is_archive() ) { $template = $this->options['metadesc-archive-wpseo']; }
// If we're on a paginated page, and the template doesn't change for paginated pages, bail. if ( ( ! is_string( $metadesc ) || $metadesc === '' ) && get_query_var( 'paged' ) && get_query_var( 'paged' ) > 1 && $template !== '' ) { if ( strpos( $template, '%%page' ) === false ) { $metadesc = ''; } } }
$post_data = $post;
if ( is_string( $metadesc_override ) && '' !== $metadesc_override ) { $metadesc = $metadesc_override; if ( isset( $term ) ) { $post_data = $term; } } else if ( ( ! is_string( $metadesc ) || '' === $metadesc ) && '' !== $template ) { if ( ! isset( $term ) ) { $term = $wp_query->get_queried_object(); }
$metadesc = $template; $post_data = $term; }
$metadesc = wpseo_replace_vars( $metadesc, $post_data );
/** * Filter: 'wpseo_metadesc' - Allow changing the WP SEO meta description sentence. * * @api string $metadesc The description sentence. */ $this->metadesc = apply_filters( 'wpseo_metadesc', trim( $metadesc ) ); }
/** * Based on the redirect meta value, this function determines whether it should redirect the current post / page. * * @return boolean */ function page_redirect() { if ( is_singular() ) { global $post; if ( ! isset( $post ) || ! is_object( $post ) ) { return false; }
$redir = WPSEO_Meta::get_value( 'redirect', $post->ID ); if ( $redir !== '' ) { wp_redirect( $redir, 301 ); exit; } }
return false; }
/** * Outputs noindex values for the current page. */ public function noindex_page() { echo '<meta name="robots" content="noindex" />', "\n"; }
/** * Send a Robots HTTP header preventing URL from being indexed in the search results while allowing search engines * to follow the links in the object at the URL. * * @since 1.1.7 * @return boolean Boolean indicating whether the noindex header was sent */ public function noindex_feed() {
if ( ( is_feed() || is_robots() ) && headers_sent() === false ) { header( 'X-Robots-Tag: noindex,follow', true );
return true; }
return false; }
/** * Adds rel="nofollow" to a link, only used for login / registration links. * * @param string $input The link element as a string. * * @return string */ public function nofollow_link( $input ) { return str_replace( '<a ', '<a rel="nofollow" ', $input ); }
/** * When certain archives are disabled, this redirects those to the homepage. * @return boolean False when no redirect was triggered */ function archive_redirect() { global $wp_query;
if ( ( $this->options['disable-date'] === true && $wp_query->is_date ) || ( $this->options['disable-author'] === true && $wp_query->is_author ) || ( isset( $this->options['disable-post_formats'] ) && $this->options['disable-post_formats'] && $wp_query->is_tax( 'post_format' ) ) ) { wp_safe_redirect( get_bloginfo( 'url' ), 301 ); exit; }
return false; }
/** * If the option to redirect attachments to their parent is checked, this performs the redirect. * * An extra check is done for when the attachment has no parent. * @return boolean False when no redirect was triggered */ function attachment_redirect() { global $post; if ( is_attachment() && ( ( is_object( $post ) && isset( $post->post_parent ) ) && ( is_numeric( $post->post_parent ) && $post->post_parent != 0 ) ) ) { wp_safe_redirect( get_permalink( $post->post_parent ), 301 ); exit; }
return false; }
/** * Trailing slashes for everything except is_single(). * * Thanks to Mark Jaquith for this code. * * @param string $url * @param string $type * * @return string */ function add_trailingslash( $url, $type ) { if ( 'single' === $type || 'single_paged' === $type ) { return $url; } else { return trailingslashit( $url ); } }
/** * Removes the ?replytocom variable from the link, replacing it with a #comment-<number> anchor. * * @todo Should this function also allow for relative urls ? * * @param string $link The comment link as a string. * * @return string */ public function remove_reply_to_com( $link ) { return preg_replace( '`href=(["\'])(?:.*(?:\?|&|&)replytocom=(\d+)#respond)`', 'href=$1#comment-$2', $link ); }
/** * Redirect out the ?replytocom variables when cleanreplytocom is enabled * * @since 1.4.13 * @return boolean */ function replytocom_redirect() {
if ( isset( $_GET['replytocom'] ) && is_singular() ) { $url = get_permalink( $GLOBALS['post']->ID ); $hash = sanitize_text_field( $_GET['replytocom'] ); $query_string = remove_query_arg( 'replytocom', sanitize_text_field( $_SERVER['QUERY_STRING'] ) ); if ( ! empty( $query_string ) ) { $url .= '?' . $query_string; } $url .= '#comment-' . $hash; wp_safe_redirect( $url, 301 ); exit; }
return false; }
/** * Removes unneeded query variables from the URL. * @return boolean */ public function clean_permalink() { if ( is_robots() || get_query_var( 'sitemap' ) ) { return false; }
global $wp_query;
// Recreate current URL $cururl = 'http'; if ( isset( $_SERVER['HTTPS'] ) && $_SERVER['HTTPS'] == 'on' ) { $cururl .= 's'; } $cururl .= '://';
if ( $_SERVER['SERVER_PORT'] != '80' && $_SERVER['SERVER_PORT'] != '443' ) { $cururl .= $_SERVER['SERVER_NAME'] . ':' . $_SERVER['SERVER_PORT'] . $_SERVER['REQUEST_URI']; } else { $cururl .= $_SERVER['SERVER_NAME'] . $_SERVER['REQUEST_URI']; } $properurl = '';
if ( is_singular() ) { global $post; if ( empty( $post ) ) { $post = $wp_query->get_queried_object(); }
$properurl = get_permalink( $post->ID );
$page = get_query_var( 'page' ); if ( $page && $page != 1 ) { $post = get_post( $post->ID ); $page_count = substr_count( $post->post_content, '<!--nextpage-->' ); if ( $page > ( $page_count + 1 ) ) { $properurl = user_trailingslashit( trailingslashit( $properurl ) . ( $page_count + 1 ) ); } else { $properurl = user_trailingslashit( trailingslashit( $properurl ) . $page ); } }
// Fix reply to comment links, whoever decided this should be a GET variable? if ( preg_match( '`(\?replytocom=[^&]+)`', sanitize_text_field( $_SERVER['REQUEST_URI'] ), $matches ) ) { $properurl .= str_replace( '?replytocom=', '#comment-', $matches[0] ); } unset( $matches );
// Prevent cleaning out posts & page previews for people capable of viewing them if ( isset( $_GET['preview'], $_GET['preview_nonce'] ) && current_user_can( 'edit_post' ) ) { $properurl = ''; } } elseif ( is_front_page() ) { if ( $this->is_home_posts_page() ) { $properurl = get_bloginfo( 'url' ) . '/'; } elseif ( $this->is_home_static_page() ) { $properurl = get_permalink( $GLOBALS['post']->ID ); } } elseif ( is_category() || is_tag() || is_tax() ) { $term = $wp_query->get_queried_object(); if ( is_feed() ) { $properurl = get_term_feed_link( $term->term_id, $term->taxonomy ); } else { $properurl = get_term_link( $term, $term->taxonomy ); } } elseif ( is_search() ) { $s = urlencode( preg_replace( '`(%20|\+)`', ' ', get_search_query() ) ); $properurl = get_bloginfo( 'url' ) . '/?s=' . $s; } elseif ( is_404() ) { if ( is_multisite() && ! is_subdomain_install() && is_main_site() ) { if ( $cururl == get_bloginfo( 'url' ) . '/blog/' || $cururl == get_bloginfo( 'url' ) . '/blog' ) { if ( $this->is_home_static_page() ) { $properurl = get_permalink( get_option( 'page_for_posts' ) ); } else { $properurl = get_bloginfo( 'url' ) . '/'; } } } }
if ( ! empty( $properurl ) && $wp_query->query_vars['paged'] != 0 && $wp_query->post_count != 0 ) { if ( is_search() && ! empty( $s ) ) { $properurl = get_bloginfo( 'url' ) . '/page/' . $wp_query->query_vars['paged'] . '/?s=' . $s; } else { $properurl = user_trailingslashit( trailingslashit( $properurl ) . 'page/' . $wp_query->query_vars['paged'] ); } }
// Prevent cleaning out the WP Subscription managers interface for everyone if ( isset( $_GET['wp-subscription-manager'] ) ) { $properurl = ''; }
/** * Filter: 'wpseo_whitelist_permalink_vars' - Allow plugins to register their own variables not to clean * * @api array $unsigned Array of permalink variables _not_ to clean. Empty by default. */ $whitelisted_extravars = apply_filters( 'wpseo_whitelist_permalink_vars', array() );
if ( $this->options['cleanpermalink-googlesitesearch'] === true ) { // Prevent cleaning out Google Site searches $whitelisted_extravars = array_merge( $whitelisted_extravars, array( 'q', 'cx', 'debug', 'cof', 'ie', 'sa', ) ); }
if ( $this->options['cleanpermalink-googlecampaign'] === true ) { // Prevent cleaning out Google Analytics campaign variables $whitelisted_extravars = array_merge( $whitelisted_extravars, array( 'utm_campaign', 'utm_medium', 'utm_source', 'utm_content', 'utm_term', 'utm_id', 'gclid', ) ); }
if ( $this->options['cleanpermalink-extravars'] !== '' ) { $extravars = explode( ',', $this->options['cleanpermalink-extravars'] ); $extravars = array_map( 'trim', $extravars ); $whitelisted_extravars = array_merge( $whitelisted_extravars, $extravars ); unset( $extravars ); }
foreach ( $whitelisted_extravars as $get ) { if ( isset( $_GET[ trim( $get ) ] ) ) { $properurl = ''; } } unset( $get );
if ( ! empty( $properurl ) && $cururl != $properurl ) { wp_safe_redirect( $properurl, 301 ); exit; } }
/** * Replaces the possible RSS variables with their actual values. * * @param string $content The RSS content that should have the variables replaced. * * @return string */ function rss_replace_vars( $content ) { global $post;
/** * Allow the developer to determine whether or not to follow the links in the bits WP SEO adds to the RSS feed, defaults to true. * * @api bool $unsigned Whether or not to follow the links in RSS feed, defaults to true. * * @since 1.4.20 */ $no_follow = apply_filters( 'nofollow_rss_links', true ); $no_follow_attr = ''; if ( $no_follow === true ) { $no_follow_attr = 'rel="nofollow" '; }
$author_link = ''; if ( is_object( $post ) ) { $author_link = '<a ' . $no_follow_attr . 'href="' . esc_url( get_author_posts_url( $post->post_author ) ) . '">' . get_the_author() . '</a>'; }
$post_link = '<a ' . $no_follow_attr . 'href="' . esc_url( get_permalink() ) . '">' . get_the_title() . '</a>'; $blog_link = '<a ' . $no_follow_attr . 'href="' . esc_url( get_bloginfo( 'url' ) ) . '">' . get_bloginfo( 'name' ) . '</a>'; $blog_desc_link = '<a ' . $no_follow_attr . 'href="' . esc_url( get_bloginfo( 'url' ) ) . '">' . get_bloginfo( 'name' ) . ' - ' . strip_tags( get_bloginfo( 'description' ) ) . '</a>';
$content = stripslashes( trim( $content ) ); $content = str_replace( '%%AUTHORLINK%%', $author_link, $content ); $content = str_replace( '%%POSTLINK%%', $post_link, $content ); $content = str_replace( '%%BLOGLINK%%', $blog_link, $content ); $content = str_replace( '%%BLOGDESCLINK%%', $blog_desc_link, $content );
return $content; }
/** * Adds the RSS footer (or header) to the full RSS feed item. * * @param string $content Feed item content. * * @return string */ function embed_rssfooter( $content ) { return $this->embed_rss( $content, 'full' ); }
/** * Adds the RSS footer (or header) to the excerpt RSS feed item. * * @param string $content Feed item excerpt. * * @return string */ function embed_rssfooter_excerpt( $content ) { return $this->embed_rss( $content, 'excerpt' ); }
/** * Adds the RSS footer and/or header to an RSS feed item. * * @since 1.4.14 * * @param string $content Feed item content. * @param string $context Feed item context, either 'excerpt' or 'full'. * * @return string */ function embed_rss( $content, $context = 'full' ) {
/** * Filter: 'wpseo_include_rss_footer' - Allow the the RSS footer to be dynamically shown/hidden * * @api boolean $show_embed Indicates if the RSS footer should be shown or not * @param string $context The context of the RSS content - 'full' or 'excerpt' */ if ( ! apply_filters( 'wpseo_include_rss_footer', true, $context ) ) { return $content; }
if ( is_feed() ) { $before = ''; $after = '';
if ( $this->options['rssbefore'] !== '' ) { $before = wpautop( $this->rss_replace_vars( $this->options['rssbefore'] ) ); } if ( $this->options['rssafter'] !== '' ) { $after = wpautop( $this->rss_replace_vars( $this->options['rssafter'] ) ); } if ( $before !== '' || $after !== '' ) { if ( ( isset( $context ) && $context === 'excerpt' ) && trim( $content ) !== '' ) { $content = wpautop( $content ); } $content = $before . $content . $after; } }
return $content; }
/** * Used in the force rewrite functionality this retrieves the output, replaces the title with the proper SEO * title and then flushes the output. */ function flush_cache() {
global $wp_query;
if ( $this->ob_started !== true ) { return false; }
$content = ob_get_contents(); ob_end_clean();
$old_wp_query = $wp_query;
wp_reset_query();
$title = $this->title( '' );
// Find all titles, strip them out and add the new one in within the debug marker, so it's easily identified whether a site uses force rewrite. $content = preg_replace( '/<title.*?\/title>/i', '', $content ); $content = str_replace( $this->debug_marker( false ), $this->debug_marker( false ) . "\n" . '<title>' . $title . '</title>', $content );
$GLOBALS['wp_query'] = $old_wp_query;
echo $content;
return true; }
/** * Starts the output buffer so it can later be fixed by flush_cache() */ function force_rewrite_output_buffer() { $this->ob_started = true; ob_start(); }
/** * Function used in testing whether the title should be force rewritten or not. * * @param string $title * * @return string */ function title_test_helper( $title ) { $wpseo_titles = get_option( 'wpseo_titles' );
$wpseo_titles['title_test'] ++; update_option( 'wpseo_titles', $wpseo_titles );
// Prevent this setting from being on forever when something breaks, as it breaks caching. if ( $wpseo_titles['title_test'] > 5 ) { $wpseo_titles['title_test'] = 0; update_option( 'wpseo_titles', $wpseo_titles );
remove_filter( 'wpseo_title', array( $this, 'title_test_helper' ) );
return $title; }
if ( ! defined( 'DONOTCACHEPAGE' ) ) { define( 'DONOTCACHEPAGE', true ); } if ( ! defined( 'DONOTCACHCEOBJECT' ) ) { define( 'DONOTCACHCEOBJECT', true ); } if ( ! defined( 'DONOTMINIFY' ) ) { define( 'DONOTMINIFY', true ); }
if ( $_SERVER['HTTP_USER_AGENT'] === "WordPress/{$GLOBALS['wp_version']}; " . get_bloginfo( 'url' ) . ' - Yoast' ) { return 'This is a Yoast Test Title'; }
return $title; }
/** * Get the product name in the head section * * @return string */ private function head_product_name() { if ( file_exists( WPSEO_PATH . 'premium/' ) ) { return 'Yoast WordPress SEO Premium plugin'; } else { return 'Yoast WordPress SEO plugin'; } }
} /* End of class */
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