/wp-content/plugins/wordpress-seo/inc/class-wpseo-replace-vars.php
PHP | 1215 lines | 644 code | 197 blank | 374 comment | 156 complexity | 073f83df0e54d731a41ecb990d92a1de MD5 | raw file
- <?php
- /**
- * @package WPSEO\Internals
- * @since 1.5.4
- */
- // Avoid direct calls to this file.
- if ( ! defined( 'WPSEO_VERSION' ) ) {
- header( 'Status: 403 Forbidden' );
- header( 'HTTP/1.1 403 Forbidden' );
- exit();
- }
- /**
- * Class: WPSEO_Replace_Vars
- *
- * This class implements the replacing of `%%variable_placeholders%%` with their real value based on the current
- * requested page/post/cpt/etc in text strings.
- */
- class WPSEO_Replace_Vars {
- /**
- * @var array Default post/page/cpt information
- */
- protected $defaults = array(
- 'ID' => '',
- 'name' => '',
- 'post_author' => '',
- 'post_content' => '',
- 'post_date' => '',
- 'post_excerpt' => '',
- 'post_modified' => '',
- 'post_title' => '',
- 'taxonomy' => '',
- 'term_id' => '',
- 'term404' => '',
- );
- /**
- * @var object Current post/page/cpt information
- */
- protected $args;
- /**
- * @var array Help texts for use in WPSEO -> Titles and Meta's help tabs
- */
- protected static $help_texts = array();
- /**
- * @var array Register of additional variable replacements registered by other plugins/themes
- */
- protected static $external_replacements = array();
- /**
- * Constructor
- *
- * @return \WPSEO_Replace_Vars
- */
- public function __construct() {
- }
- /**
- * Setup the help texts and external replacements as statics so they will be available to all instances
- */
- public static function setup_statics_once() {
- if ( self::$help_texts === array() ) {
- self::set_basic_help_texts();
- self::set_advanced_help_texts();
- }
- if ( self::$external_replacements === array() ) {
- /**
- * Action: 'wpseo_register_extra_replacements' - Allows for registration of additional
- * variables to replace
- */
- do_action( 'wpseo_register_extra_replacements' );
- }
- }
- /**
- * Register new replacement %%variables%%
- * For use by other plugins/themes to register extra variables
- *
- * @see wpseo_register_var_replacement() for a usage example
- *
- * @param string $var The name of the variable to replace, i.e. '%%var%%'
- * - the surrounding %% are optional.
- * @param mixed $replace_function Function or method to call to retrieve the replacement value for the variable
- * Uses the same format as add_filter/add_action function parameter and
- * should *return* the replacement value. DON'T echo it.
- * @param string $type Type of variable: 'basic' or 'advanced', defaults to 'advanced'.
- * @param string $help_text Help text to be added to the help tab for this variable.
- *
- * @return bool Whether the replacement function was succesfully registered
- */
- public static function register_replacement( $var, $replace_function, $type = 'advanced', $help_text = '' ) {
- $success = false;
- if ( is_string( $var ) && $var !== '' ) {
- $var = self::remove_var_delimiter( $var );
- if ( preg_match( '`^[A-Z0-9_-]+$`i', $var ) === false ) {
- trigger_error( __( 'A replacement variable can only contain alphanumeric characters, an underscore or a dash. Try renaming your variable.', 'wordpress-seo' ), E_USER_WARNING );
- }
- elseif ( strpos( $var, 'cf_' ) === 0 || strpos( $var, 'ct_' ) === 0 ) {
- trigger_error( __( 'A replacement variable can not start with "%%cf_" or "%%ct_" as these are reserved for the WPSEO standard variable variables for custom fields and custom taxonomies. Try making your variable name unique.', 'wordpress-seo' ), E_USER_WARNING );
- }
- elseif ( ! method_exists( __CLASS__, 'retrieve_' . $var ) ) {
- if ( ! isset( self::$external_replacements[ $var ] ) ) {
- self::$external_replacements[ $var ] = $replace_function;
- self::register_help_text( $type, $var, $help_text );
- $success = true;
- }
- else {
- trigger_error( __( 'A replacement variable with the same name has already been registered. Try making your variable name more unique.', 'wordpress-seo' ), E_USER_WARNING );
- }
- }
- else {
- trigger_error( __( 'You cannot overrule a WPSEO standard variable replacement by registering a variable with the same name. Use the "wpseo_replacements" filter instead to adjust the replacement value.', 'wordpress-seo' ), E_USER_WARNING );
- }
- }
- return $success;
- }
- /**
- * Replace `%%variable_placeholders%%` with their real value based on the current requested page/post/cpt/etc
- *
- * @param string $string the string to replace the variables in.
- * @param array $args the object some of the replacement values might come from,
- * could be a post, taxonomy or term.
- * @param array $omit variables that should not be replaced by this function.
- *
- * @return string
- */
- public function replace( $string, $args, $omit = array() ) {
- $string = strip_tags( $string );
- // Let's see if we can bail super early.
- if ( strpos( $string, '%%' ) === false ) {
- return WPSEO_Utils::standardize_whitespace( $string );
- }
- $args = (array) $args;
- if ( isset( $args['post_content'] ) && ! empty( $args['post_content'] ) ) {
- $args['post_content'] = WPSEO_Utils::strip_shortcode( $args['post_content'] );
- }
- if ( isset( $args['post_excerpt'] ) && ! empty( $args['post_excerpt'] ) ) {
- $args['post_excerpt'] = WPSEO_Utils::strip_shortcode( $args['post_excerpt'] );
- }
- $this->args = (object) wp_parse_args( $args, $this->defaults );
- // Clean $omit array.
- if ( is_array( $omit ) && $omit !== array() ) {
- $omit = array_map( array( __CLASS__, 'remove_var_delimiter' ), $omit );
- }
- $replacements = array();
- if ( preg_match_all( '`%%([^%]+(%%single)?)%%?`iu', $string, $matches ) ) {
- $replacements = $this->set_up_replacements( $matches, $omit );
- }
- /**
- * Filter: 'wpseo_replacements' - Allow customization of the replacements before they are applied
- *
- * @api array $replacements The replacements
- */
- $replacements = apply_filters( 'wpseo_replacements', $replacements );
- // Do the actual replacements.
- if ( is_array( $replacements ) && $replacements !== array() ) {
- $string = str_replace( array_keys( $replacements ), array_values( $replacements ), $string );
- }
- /**
- * Filter: 'wpseo_replacements_final' - Allow overruling of whether or not to remove placeholders
- * which didn't yield a replacement
- *
- * @example <code>add_filter( 'wpseo_replacements_final', '__return_false' );</code>
- *
- * @api bool $final
- */
- if ( apply_filters( 'wpseo_replacements_final', true ) === true && ( isset( $matches[1] ) && is_array( $matches[1] ) ) ) {
- // Remove non-replaced variables.
- $remove = array_diff( $matches[1], $omit ); // Make sure the $omit variables do not get removed.
- $remove = array_map( array( __CLASS__, 'add_var_delimiter' ), $remove );
- $string = str_replace( $remove, '', $string );
- }
- // Undouble separators which have nothing between them, i.e. where a non-replaced variable was removed.
- if ( isset( $replacements['%%sep%%'] ) && ( is_string( $replacements['%%sep%%'] ) && $replacements['%%sep%%'] !== '' ) ) {
- $q_sep = preg_quote( $replacements['%%sep%%'], '`' );
- $string = preg_replace( '`' . $q_sep . '(?:\s*' . $q_sep . ')*`u', $replacements['%%sep%%'], $string );
- }
- // Remove superfluous whitespace.
- $string = WPSEO_Utils::standardize_whitespace( $string );
- return trim( $string );
- }
- /**
- * Retrieve the replacements for the variables found.
- *
- * @param array $matches variables found in the original string - regex result.
- * @param array $omit variables that should not be replaced by this function.
- *
- * @return array retrieved replacements - this might be a smaller array as some variables
- * may not yield a replacement in certain contexts.
- */
- private function set_up_replacements( $matches, $omit ) {
- $replacements = array();
- // @todo -> figure out a way to deal with external functions starting with cf_/ct_.
- foreach ( $matches[1] as $k => $var ) {
- // Don't set up replacements which should be omitted.
- if ( in_array( $var, $omit, true ) ) {
- continue;
- }
- // Deal with variable variable names first.
- if ( strpos( $var, 'cf_' ) === 0 ) {
- $replacement = $this->retrieve_cf_custom_field_name( $var );
- }
- elseif ( strpos( $var, 'ct_desc_' ) === 0 ) {
- $replacement = $this->retrieve_ct_desc_custom_tax_name( $var );
- }
- elseif ( strpos( $var, 'ct_' ) === 0 ) {
- $single = ( isset( $matches[2][ $k ] ) && $matches[2][ $k ] !== '' ) ? true : false;
- $replacement = $this->retrieve_ct_custom_tax_name( $var, $single );
- } // Deal with non-variable variable names.
- elseif ( method_exists( $this, 'retrieve_' . $var ) ) {
- $method_name = 'retrieve_' . $var;
- $replacement = $this->$method_name();
- } // Deal with externally defined variable names.
- elseif ( isset( self::$external_replacements[ $var ] ) && ! is_null( self::$external_replacements[ $var ] ) ) {
- $replacement = call_user_func( self::$external_replacements[ $var ], $var, $this->args );
- }
- // Replacement retrievals can return null if no replacement can be determined, root those outs.
- if ( isset( $replacement ) ) {
- $var = self::add_var_delimiter( $var );
- $replacements[ $var ] = $replacement;
- }
- unset( $replacement, $single, $method_name );
- }
- return $replacements;
- }
- /* *********************** BASIC VARIABLES ************************** */
- /**
- * Retrieve the post/cpt categories (comma separated) for use as replacement string.
- *
- * @return string|null
- */
- private function retrieve_category() {
- $replacement = null;
- if ( ! empty( $this->args->ID ) ) {
- $cat = $this->get_terms( $this->args->ID, 'category' );
- if ( $cat !== '' ) {
- $replacement = $cat;
- }
- }
- if ( ( ! isset( $replacement ) || $replacement === '' ) && ( isset( $this->args->cat_name ) && ! empty( $this->args->cat_name ) ) ) {
- $replacement = $this->args->cat_name;
- }
- return $replacement;
- }
- /**
- * Retrieve the category description for use as replacement string.
- *
- * @return string|null
- */
- private function retrieve_category_description() {
- return $this->retrieve_term_description();
- }
- /**
- * Retrieve the date of the post/page/cpt for use as replacement string.
- *
- * @return string|null
- */
- private function retrieve_date() {
- $replacement = null;
- if ( $this->args->post_date !== '' ) {
- $replacement = mysql2date( get_option( 'date_format' ), $this->args->post_date, true );
- }
- else {
- if ( get_query_var( 'day' ) && get_query_var( 'day' ) !== '' ) {
- $replacement = get_the_date();
- }
- else {
- if ( single_month_title( ' ', false ) && single_month_title( ' ', false ) !== '' ) {
- $replacement = single_month_title( ' ', false );
- }
- elseif ( get_query_var( 'year' ) !== '' ) {
- $replacement = get_query_var( 'year' );
- }
- }
- }
- return $replacement;
- }
- /**
- * Retrieve the post/page/cpt excerpt for use as replacement string.
- * The excerpt will be auto-generated if it does not exist.
- *
- * @return string|null
- */
- private function retrieve_excerpt() {
- $replacement = null;
- if ( ! empty( $this->args->ID ) ) {
- if ( $this->args->post_excerpt !== '' ) {
- $replacement = strip_tags( $this->args->post_excerpt );
- }
- elseif ( $this->args->post_content !== '' ) {
- $replacement = wp_html_excerpt( strip_shortcodes( $this->args->post_content ), 155 );
- }
- }
- return $replacement;
- }
- /**
- * Retrieve the post/page/cpt excerpt for use as replacement string (without auto-generation).
- *
- * @return string|null
- */
- private function retrieve_excerpt_only() {
- $replacement = null;
- if ( ! empty( $this->args->ID ) && $this->args->post_excerpt !== '' ) {
- $replacement = strip_tags( $this->args->post_excerpt );
- }
- return $replacement;
- }
- /**
- * Retrieve the title of the parent page of the current page/cpt for use as replacement string.
- * Only applicable for hierarchical post types.
- *
- * @todo - check: shouldn't this use $this->args as well ?
- *
- * @return string|null
- */
- private function retrieve_parent_title() {
- $replacement = null;
- if ( ! isset( $replacement ) && ( ( is_singular() || is_admin() ) && isset( $GLOBALS['post'] ) ) ) {
- if ( isset( $GLOBALS['post']->post_parent ) && 0 !== $GLOBALS['post']->post_parent ) {
- $replacement = get_the_title( $GLOBALS['post']->post_parent );
- }
- }
- return $replacement;
- }
- /**
- * Retrieve the current search phrase for use as replacement string.
- *
- * @return string|null
- */
- private function retrieve_searchphrase() {
- $replacement = null;
- if ( ! isset( $replacement ) ) {
- $search = get_query_var( 's' );
- if ( $search !== '' ) {
- $replacement = esc_html( $search );
- }
- }
- return $replacement;
- }
- /**
- * Retrieve the separator for use as replacement string.
- *
- * @return string
- */
- private function retrieve_sep() {
- return WPSEO_Utils::get_title_separator();
- }
- /**
- * Retrieve the site's tag line / description for use as replacement string.
- *
- * @return string|null
- */
- private function retrieve_sitedesc() {
- static $replacement;
- if ( ! isset( $replacement ) ) {
- $description = trim( strip_tags( get_bloginfo( 'description' ) ) );
- if ( $description !== '' ) {
- $replacement = $description;
- }
- }
- return $replacement;
- }
- /**
- * Retrieve the site's name for use as replacement string.
- *
- * @return string|null
- */
- private function retrieve_sitename() {
- static $replacement;
- if ( ! isset( $replacement ) ) {
- $sitename = WPSEO_Utils::get_site_name();
- if ( $sitename !== '' ) {
- $replacement = $sitename;
- }
- }
- return $replacement;
- }
- /**
- * Retrieve the current tag/tags for use as replacement string.
- *
- * @return string|null
- */
- private function retrieve_tag() {
- $replacement = null;
- if ( isset( $this->args->ID ) ) {
- $tags = $this->get_terms( $this->args->ID, 'post_tag' );
- if ( $tags !== '' ) {
- $replacement = $tags;
- }
- }
- return $replacement;
- }
- /**
- * Retrieve the tag description for use as replacement string.
- *
- * @return string|null
- */
- private function retrieve_tag_description() {
- return $this->retrieve_term_description();
- }
- /**
- * Retrieve the term description for use as replacement string.
- *
- * @return string|null
- */
- private function retrieve_term_description() {
- $replacement = null;
- if ( isset( $this->args->term_id ) && ! empty( $this->args->taxonomy ) ) {
- $term_desc = get_term_field( 'description', $this->args->term_id, $this->args->taxonomy );
- if ( $term_desc !== '' ) {
- $replacement = trim( strip_tags( $term_desc ) );
- }
- }
- return $replacement;
- }
- /**
- * Retrieve the term name for use as replacement string.
- *
- * @return string|null
- */
- private function retrieve_term_title() {
- $replacement = null;
- if ( ! empty( $this->args->taxonomy ) && ! empty( $this->args->name ) ) {
- $replacement = $this->args->name;
- }
- return $replacement;
- }
- /**
- * Retrieve the title of the post/page/cpt for use as replacement string.
- *
- * @return string|null
- */
- private function retrieve_title() {
- $replacement = null;
- if ( is_string( $this->args->post_title ) && $this->args->post_title !== '' ) {
- $replacement = stripslashes( $this->args->post_title );
- }
- return $replacement;
- }
- /**
- * Retrieve primary category for use as replacement string.
- *
- * @return bool|int|null
- */
- private function retrieve_primary_category() {
- $primary_category = null;
- if ( ! empty( $this->args->ID ) ) {
- $wpseo_primary_category = new WPSEO_Primary_Term( 'category', $this->args->ID );
- $term_id = $wpseo_primary_category->get_primary_term();
- $term = get_term( $term_id );
- if ( ! is_wp_error( $term ) && ! empty( $term ) ) {
- $primary_category = $term->name;
- }
- }
- return $primary_category;
- }
- /* *********************** ADVANCED VARIABLES ************************** */
- /**
- * Determine the page numbering of the current post/page/cpt
- *
- * @param string $request 'nr'|'max' - whether to return the page number or the max number of pages.
- *
- * @return int|null
- */
- private function determine_pagenumbering( $request = 'nr' ) {
- global $wp_query, $post;
- $max_num_pages = null;
- $page_number = null;
- $max_num_pages = 1;
- if ( ! is_singular() ) {
- $page_number = get_query_var( 'paged' );
- if ( $page_number === 0 || $page_number === '' ) {
- $page_number = 1;
- }
- if ( isset( $wp_query->max_num_pages ) && ( $wp_query->max_num_pages != '' && $wp_query->max_num_pages != 0 ) ) {
- $max_num_pages = $wp_query->max_num_pages;
- }
- }
- else {
- $page_number = get_query_var( 'page' );
- if ( $page_number === 0 || $page_number === '' ) {
- $page_number = 1;
- }
- if ( isset( $post->post_content ) ) {
- $max_num_pages = ( substr_count( $post->post_content, '<!--nextpage-->' ) + 1 );
- }
- }
- $return = null;
- switch ( $request ) {
- case 'nr':
- $return = $page_number;
- break;
- case 'max':
- $return = $max_num_pages;
- break;
- }
- return $return;
- }
- /**
- * Determine the post type names for the current post/page/cpt
- *
- * @param string $request 'single'|'plural' - whether to return the single or plural form.
- *
- * @return string|null
- */
- private function determine_pt_names( $request = 'single' ) {
- global $wp_query;
- $pt_single = null;
- $pt_plural = null;
- if ( isset( $wp_query->query_vars['post_type'] ) && ( ( is_string( $wp_query->query_vars['post_type'] ) && $wp_query->query_vars['post_type'] !== '' ) || ( is_array( $wp_query->query_vars['post_type'] ) && $wp_query->query_vars['post_type'] !== array() ) ) ) {
- $post_type = $wp_query->query_vars['post_type'];
- }
- else {
- // Make it work in preview mode.
- $post_type = $wp_query->get_queried_object()->post_type;
- }
- if ( is_array( $post_type ) ) {
- $post_type = reset( $post_type );
- }
- if ( $post_type !== '' ) {
- $pt = get_post_type_object( $post_type );
- $pt_plural = $pt_single = $pt->name;
- if ( isset( $pt->labels->singular_name ) ) {
- $pt_single = $pt->labels->singular_name;
- }
- if ( isset( $pt->labels->name ) ) {
- $pt_plural = $pt->labels->name;
- }
- }
- $return = null;
- switch ( $request ) {
- case 'single':
- $return = $pt_single;
- break;
- case 'plural':
- $return = $pt_plural;
- break;
- }
- return $return;
- }
- /**
- * Retrieve the attachment caption for use as replacement string.
- *
- * @return string|null
- */
- private function retrieve_caption() {
- return $this->retrieve_excerpt_only();
- }
- /**
- * Retrieve a post/page/cpt's custom field value for use as replacement string
- *
- * @param string $var The complete variable to replace which includes the name of
- * the custom field which value is to be retrieved.
- *
- * @return string|null
- */
- private function retrieve_cf_custom_field_name( $var ) {
- global $post;
- $replacement = null;
- if ( is_string( $var ) && $var !== '' ) {
- $field = substr( $var, 3 );
- if ( ( is_singular() || is_admin() ) && ( is_object( $post ) && isset( $post->ID ) ) ) {
- $name = get_post_meta( $post->ID, $field, true );
- if ( $name !== '' ) {
- $replacement = $name;
- }
- }
- }
- return $replacement;
- }
- /**
- * Retrieve a post/page/cpt's custom taxonomies for use as replacement string
- *
- * @param string $var The complete variable to replace which includes the name of
- * the custom taxonomy which value(s) is to be retrieved.
- * @param bool $single Whether to retrieve only the first or all values for the taxonomy.
- *
- * @return string|null
- */
- private function retrieve_ct_custom_tax_name( $var, $single = false ) {
- $replacement = null;
- if ( ( is_string( $var ) && $var !== '' ) && ! empty( $this->args->ID ) ) {
- $tax = substr( $var, 3 );
- $name = $this->get_terms( $this->args->ID, $tax, $single );
- if ( $name !== '' ) {
- $replacement = $name;
- }
- }
- return $replacement;
- }
- /**
- * Retrieve a post/page/cpt's custom taxonomies description for use as replacement string
- *
- * @param string $var The complete variable to replace which includes the name of
- * the custom taxonomy which description is to be retrieved.
- *
- * @return string|null
- */
- private function retrieve_ct_desc_custom_tax_name( $var ) {
- global $post;
- $replacement = null;
- if ( is_string( $var ) && $var !== '' ) {
- $tax = substr( $var, 8 );
- if ( is_object( $post ) && isset( $post->ID ) ) {
- $terms = get_the_terms( $post->ID, $tax );
- if ( is_array( $terms ) && $terms !== array() ) {
- $term = current( $terms );
- $term_desc = get_term_field( 'description', $term->term_id, $tax );
- if ( $term_desc !== '' ) {
- $replacement = trim( strip_tags( $term_desc ) );
- }
- }
- }
- }
- return $replacement;
- }
- /**
- * Retrieve the current date for use as replacement string.
- *
- * @return string
- */
- private function retrieve_currentdate() {
- static $replacement;
- if ( ! isset( $replacement ) ) {
- $replacement = date_i18n( get_option( 'date_format' ) );
- }
- return $replacement;
- }
- /**
- * Retrieve the current day for use as replacement string.
- *
- * @return string
- */
- private function retrieve_currentday() {
- static $replacement;
- if ( ! isset( $replacement ) ) {
- $replacement = date_i18n( 'j' );
- }
- return $replacement;
- }
- /**
- * Retrieve the current month for use as replacement string.
- *
- * @return string
- */
- private function retrieve_currentmonth() {
- static $replacement;
- if ( ! isset( $replacement ) ) {
- $replacement = date_i18n( 'F' );
- }
- return $replacement;
- }
- /**
- * Retrieve the current time for use as replacement string.
- *
- * @return string
- */
- private function retrieve_currenttime() {
- static $replacement;
- if ( ! isset( $replacement ) ) {
- $replacement = date_i18n( get_option( 'time_format' ) );
- }
- return $replacement;
- }
- /**
- * Retrieve the current year for use as replacement string.
- *
- * @return string
- */
- private function retrieve_currentyear() {
- static $replacement;
- if ( ! isset( $replacement ) ) {
- $replacement = date_i18n( 'Y' );
- }
- return $replacement;
- }
- /**
- * Retrieve the post/page/cpt's focus keyword for use as replacement string.
- *
- * @return string|null
- */
- private function retrieve_focuskw() {
- $replacement = null;
- if ( ! empty( $this->args->ID ) ) {
- $focus_kw = WPSEO_Meta::get_value( 'focuskw', $this->args->ID );
- if ( $focus_kw !== '' ) {
- $replacement = $focus_kw;
- }
- }
- return $replacement;
- }
- /**
- * Retrieve the post/page/cpt ID for use as replacement string.
- *
- * @return string|null
- */
- private function retrieve_id() {
- $replacement = null;
- if ( ! empty( $this->args->ID ) ) {
- $replacement = $this->args->ID;
- }
- return $replacement;
- }
- /**
- * Retrieve the post/page/cpt modified time for use as replacement string.
- *
- * @return string|null
- */
- private function retrieve_modified() {
- $replacement = null;
- if ( ! empty( $this->args->post_modified ) ) {
- $replacement = mysql2date( get_option( 'date_format' ), $this->args->post_modified, true );
- }
- return $replacement;
- }
- /**
- * Retrieve the post/page/cpt author's "nice name" for use as replacement string.
- *
- * @return string|null
- */
- private function retrieve_name() {
- $replacement = null;
- $user_id = $this->retrieve_userid();
- $name = get_the_author_meta( 'display_name', $user_id );
- if ( $name !== '' ) {
- $replacement = $name;
- }
- return $replacement;
- }
- /**
- * Retrieve the post/page/cpt author's users description for use as a replacement string.
- *
- * @return null|string
- */
- private function retrieve_user_description() {
- $replacement = null;
- $user_id = $this->retrieve_userid();
- $description = get_the_author_meta( 'description', $user_id );
- if ( $description != '' ) {
- $replacement = $description;
- }
- return $replacement;
- }
- /**
- * Retrieve the current page number with context (i.e. 'page 2 of 4') for use as replacement string.
- *
- * @return string
- */
- private function retrieve_page() {
- $replacement = null;
- $max = $this->determine_pagenumbering( 'max' );
- $nr = $this->determine_pagenumbering( 'nr' );
- $sep = $this->retrieve_sep();
- if ( $max > 1 && $nr > 1 ) {
- $replacement = sprintf( $sep . ' ' . __( 'Page %1$d of %2$d', 'wordpress-seo' ), $nr, $max );
- }
- return $replacement;
- }
- /**
- * Retrieve the current page number for use as replacement string.
- *
- * @return string|null
- */
- private function retrieve_pagenumber() {
- $replacement = null;
- $nr = $this->determine_pagenumbering( 'nr' );
- if ( isset( $nr ) && $nr > 0 ) {
- $replacement = (string) $nr;
- }
- return $replacement;
- }
- /**
- * Retrieve the current page total for use as replacement string.
- *
- * @return string|null
- */
- private function retrieve_pagetotal() {
- $replacement = null;
- $max = $this->determine_pagenumbering( 'max' );
- if ( isset( $max ) && $max > 0 ) {
- $replacement = (string) $max;
- }
- return $replacement;
- }
- /**
- * Retrieve the post type plural label for use as replacement string.
- *
- * @return string|null
- */
- private function retrieve_pt_plural() {
- $replacement = null;
- $name = $this->determine_pt_names( 'plural' );
- if ( isset( $name ) && $name !== '' ) {
- $replacement = $name;
- }
- return $replacement;
- }
- /**
- * Retrieve the post type single label for use as replacement string.
- *
- * @return string|null
- */
- private function retrieve_pt_single() {
- $replacement = null;
- $name = $this->determine_pt_names( 'single' );
- if ( isset( $name ) && $name !== '' ) {
- $replacement = $name;
- }
- return $replacement;
- }
- /**
- * Retrieve the slug which caused the 404 for use as replacement string.
- *
- * @return string|null
- */
- private function retrieve_term404() {
- $replacement = null;
- if ( $this->args->term404 !== '' ) {
- $replacement = sanitize_text_field( str_replace( '-', ' ', $this->args->term404 ) );
- }
- else {
- $error_request = get_query_var( 'pagename' );
- if ( $error_request !== '' ) {
- $replacement = sanitize_text_field( str_replace( '-', ' ', $error_request ) );
- }
- else {
- $error_request = get_query_var( 'name' );
- if ( $error_request !== '' ) {
- $replacement = sanitize_text_field( str_replace( '-', ' ', $error_request ) );
- }
- }
- }
- return $replacement;
- }
- /**
- * Retrieve the post/page/cpt author's user id for use as replacement string.
- *
- * @return string
- */
- private function retrieve_userid() {
- $replacement = ! empty( $this->args->post_author ) ? $this->args->post_author : get_query_var( 'author' );
- return $replacement;
- }
- /* *********************** HELP TEXT RELATED ************************** */
- /**
- * Create a variable help text table
- *
- * @param string $type Either 'basic' or 'advanced'.
- *
- * @return string Help text table
- */
- private static function create_variable_help_table( $type ) {
- if ( ! in_array( $type, array( 'basic', 'advanced' ), true ) ) {
- return '';
- }
- $table = '
- <table class="yoast_help">';
- foreach ( self::$help_texts[ $type ] as $replace => $help_text ) {
- $table .= '
- <tr>
- <th>%%' . esc_html( $replace ) . '%%</th>
- <td>' . $help_text . '</td>
- </tr>';
- }
- $table .= '
- </table>';
- return $table;
- }
- /**
- * Create the help text table for the basic variables for use in a help tab
- *
- * @return string
- */
- public static function get_basic_help_texts() {
- return self::create_variable_help_table( 'basic' );
- }
- /**
- * Create the help text table for the advanced variables for use in a help tab
- *
- * @return string
- */
- public static function get_advanced_help_texts() {
- return self::create_variable_help_table( 'advanced' );
- }
- /**
- * Set the help text for a user/plugin/theme defined extra variable.
- *
- * @param string $type Type of variable: 'basic' or 'advanced'.
- * @param string $replace Variable to replace, i.e. '%%var%%'.
- * @param string $help_text The actual help text string.
- */
- private static function register_help_text( $type, $replace, $help_text = '' ) {
- if ( is_string( $replace ) && $replace !== '' ) {
- $replace = self::remove_var_delimiter( $replace );
- if ( ( is_string( $type ) && in_array( $type, array(
- 'basic',
- 'advanced',
- ), true ) ) && ( $replace !== '' && ! isset( self::$help_texts[ $type ][ $replace ] ) )
- ) {
- self::$help_texts[ $type ][ $replace ] = $help_text;
- }
- }
- }
- /**
- * Set/translate the help texts for the WPSEO standard basic variables.
- */
- private static function set_basic_help_texts() {
- self::$help_texts['basic'] = array(
- 'date' => __( 'Replaced with the date of the post/page', 'wordpress-seo' ),
- 'title' => __( 'Replaced with the title of the post/page', 'wordpress-seo' ),
- 'parent_title' => __( 'Replaced with the title of the parent page of the current page', 'wordpress-seo' ),
- 'sitename' => __( 'The site\'s name', 'wordpress-seo' ),
- 'sitedesc' => __( 'The site\'s tag line / description', 'wordpress-seo' ),
- 'excerpt' => __( 'Replaced with the post/page excerpt (or auto-generated if it does not exist)', 'wordpress-seo' ),
- 'excerpt_only' => __( 'Replaced with the post/page excerpt (without auto-generation)', 'wordpress-seo' ),
- 'tag' => __( 'Replaced with the current tag/tags', 'wordpress-seo' ),
- 'category' => __( 'Replaced with the post categories (comma separated)', 'wordpress-seo' ),
- 'primary_category' => __( 'Replaced with the primary category of the post/page', 'wordpress-seo' ),
- 'category_description' => __( 'Replaced with the category description', 'wordpress-seo' ),
- 'tag_description' => __( 'Replaced with the tag description', 'wordpress-seo' ),
- 'term_description' => __( 'Replaced with the term description', 'wordpress-seo' ),
- 'term_title' => __( 'Replaced with the term name', 'wordpress-seo' ),
- 'searchphrase' => __( 'Replaced with the current search phrase', 'wordpress-seo' ),
- 'sep' => sprintf(
- /* translators: %s: wp_title() function */
- __( 'The separator defined in your theme\'s %s tag.', 'wordpress-seo' ),
- '<code>wp_title()</code>'
- ),
- );
- }
- /**
- * Set/translate the help texts for the WPSEO standard advanced variables.
- */
- private static function set_advanced_help_texts() {
- self::$help_texts['advanced'] = array(
- 'pt_single' => __( 'Replaced with the post type single label', 'wordpress-seo' ),
- 'pt_plural' => __( 'Replaced with the post type plural label', 'wordpress-seo' ),
- 'modified' => __( 'Replaced with the post/page modified time', 'wordpress-seo' ),
- 'id' => __( 'Replaced with the post/page ID', 'wordpress-seo' ),
- 'name' => __( 'Replaced with the post/page author\'s \'nicename\'', 'wordpress-seo' ),
- 'user_description' => __( 'Replaced with the post/page author\'s \'Biographical Info\'', 'wordpress-seo' ),
- 'userid' => __( 'Replaced with the post/page author\'s userid', 'wordpress-seo' ),
- 'currenttime' => __( 'Replaced with the current time', 'wordpress-seo' ),
- 'currentdate' => __( 'Replaced with the current date', 'wordpress-seo' ),
- 'currentday' => __( 'Replaced with the current day', 'wordpress-seo' ),
- 'currentmonth' => __( 'Replaced with the current month', 'wordpress-seo' ),
- 'currentyear' => __( 'Replaced with the current year', 'wordpress-seo' ),
- 'page' => __( 'Replaced with the current page number with context (i.e. page 2 of 4)', 'wordpress-seo' ),
- 'pagetotal' => __( 'Replaced with the current page total', 'wordpress-seo' ),
- 'pagenumber' => __( 'Replaced with the current page number', 'wordpress-seo' ),
- 'caption' => __( 'Attachment caption', 'wordpress-seo' ),
- 'focuskw' => __( 'Replaced with the posts focus keyword', 'wordpress-seo' ),
- 'term404' => __( 'Replaced with the slug which caused the 404', 'wordpress-seo' ),
- 'cf_<custom-field-name>' => __( 'Replaced with a posts custom field value', 'wordpress-seo' ),
- 'ct_<custom-tax-name>' => __( 'Replaced with a posts custom taxonomies, comma separated.', 'wordpress-seo' ),
- 'ct_desc_<custom-tax-name>' => __( 'Replaced with a custom taxonomies description', 'wordpress-seo' ),
- );
- }
- /* *********************** GENERAL HELPER METHODS ************************** */
- /**
- * Remove the '%%' delimiters from a variable string
- *
- * @param string $string Variable string to be cleaned.
- *
- * @return string
- */
- private static function remove_var_delimiter( $string ) {
- return trim( $string, '%' );
- }
- /**
- * Add the '%%' delimiters to a variable string
- *
- * @param string $string Variable string to be delimited.
- *
- * @return string
- */
- private static function add_var_delimiter( $string ) {
- return '%%' . $string . '%%';
- }
- /**
- * Retrieve a post's terms, comma delimited.
- *
- * @param int $id ID of the post to get the terms for.
- * @param string $taxonomy The taxonomy to get the terms for this post from.
- * @param bool $return_single If true, return the first term.
- *
- * @return string either a single term or a comma delimited string of terms.
- */
- public function get_terms( $id, $taxonomy, $return_single = false ) {
- $output = '';
- // If we're on a specific tag, category or taxonomy page, use that.
- if ( is_category() || is_tag() || is_tax() ) {
- $term = $GLOBALS['wp_query']->get_queried_object();
- $output = $term->name;
- }
- elseif ( ! empty( $id ) && ! empty( $taxonomy ) ) {
- $terms = get_the_terms( $id, $taxonomy );
- if ( is_array( $terms ) && $terms !== array() ) {
- foreach ( $terms as $term ) {
- if ( $return_single ) {
- $output = $term->name;
- break;
- }
- else {
- $output .= $term->name . ', ';
- }
- }
- $output = rtrim( trim( $output ), ',' );
- }
- }
- unset( $terms, $term );
- /**
- * Allows filtering of the terms list used to replace %%category%%, %%tag%% and %%ct_<custom-tax-name>%% variables
- *
- * @api string $output Comma-delimited string containing the terms
- */
- return apply_filters( 'wpseo_terms', $output );
- }
- } /* End of class WPSEO_Replace_Vars */
- /**
- * Setup the class statics when the file is first loaded
- */
- WPSEO_Replace_Vars::setup_statics_once();