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 `true` if the replace var has been registered, `false` if not.
*/
public function safe_register_replacement( $var_to_replace, $replace_function, $type = 'advanced', $help_text = '' ) {
if ( ! $this->has_been_registered( $var_to_replace ) ) {
return self::register_replacement( $var_to_replace, $replace_function, $type, $help_text );
}
return false;
}
/**
* Checks whether the given replacement variable has already been registered or not.
*
* @param string $replacement_variable The replacement variable to check, including the variable delimiter (e.g. `%%var%%`).
*
* @return bool `true` if the replacement variable has already been registered.
*/
public function has_been_registered( $replacement_variable ) {
$replacement_variable = self::remove_var_delimiter( $replacement_variable );
return isset( self::$external_replacements[ $replacement_variable ] );
}
/**
* Returns the list of hidden replace vars.
*
* E.g. the replace vars that should work, but are not advertised.
*
* @return string[] The list of hidden replace vars.
*/
public function get_hidden_replace_vars() {
return [
'currentdate',
'currentyear',
'currentmonth',
'currentday',
'post_year',
'post_month',
'post_day',
'author_first_name',
'author_last_name',
'permalink',
'post_content',
'category_title',
];
}
/**
* 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 = [];
// @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 ] !== '' );
$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 !== '' ) {
return $cat;
}
}
if ( 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 !== '' ) {
// Returns a string.
$replacement = YoastSEO()->helpers->date->format_translated( $this->args->post_date, get_option( 'date_format' ) );
}
else {
if ( get_query_var( 'day' ) && get_query_var( 'day' ) !== '' ) {
// Returns a string.
$replacement = get_the_date();
}
else {
if ( single_month_title( ' ', false ) && single_month_title( ' ', false ) !== '' ) {
// Returns a string.
$replacement = single_month_title( ' ', false );
}
elseif ( get_query_var( 'year' ) !== '' ) {
// Returns an integer, let's cast to string.
$replacement = (string) 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;
$locale = \get_locale();
// Japanese doesn't have a jp_JP variant in WP.
$limit = ( $locale === 'ja' ) ? 80 : 156;
// The check `post_password_required` is because excerpt must be hidden for a post with a password.
if ( ! empty( $this->args->ID ) && ! post_password_required( $this->args->ID ) ) {
if ( $this->args->post_excerpt !== '' ) {
$replacement = wp_strip_all_tags( $this->args->post_excerpt );
}
elseif ( $this->args->post_content !== '' ) {
$content = strip_shortcodes( $this->args->post_content );
$content = wp_strip_all_tags( $content );
if ( mb_strlen( $content ) <= $limit ) {
return $content;
}
$replacement = wp_html_excerpt( $content, $limit );
// Check if the description has space and trim the auto-generated string to a word boundary.
if ( strrpos( $replacement, ' ' ) ) {
$replacement = substr( $replacement, 0, strrpos( $replacement, ' ' ) );
}
}
}
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;
// The check `post_password_required` is because excerpt must be hidden for a post with a password.
if ( ! empty( $this->args->ID ) && $this->args->post_excerpt !== '' && ! post_password_required( $this->args->ID ) ) {
$replacement = wp_strip_all_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 ( ! empty( $this->args->ID ) ) {
$parent_id = wp_get_post_parent_id( $this->args->ID );
if ( $parent_id ) {
$replacement = get_the_title( $parent_id );
}
}
return $replacement;
}
/**
* Retrieve the current search phrase for use as replacement string.
*
* @return string|null
*/
private function retrieve_searchphrase() {
$replacement = null;
$search = get_query_var( 's' );
if ( $search !== '' ) {
$replacement = esc_html( $search );
}
return $replacement;
}
/**
* Retrieve the separator for use as replacement string.
*
* @return string Retrieves the title separator.
*/
private function retrieve_sep() {
return YoastSEO()->helpers->options->get_title_separator();
}
/**
* Retrieve the site's tag line / description for use as replacement string.
*
* The `$replacement` variable is static because it doesn't change depending
* on the context. See https://github.com/Yoast/wordpress-seo/pull/1172#issuecomment-46019482.
*
* @return string|null
*/
private function retrieve_sitedesc() {
static $replacement;
if ( ! isset( $replacement ) ) {
$description = wp_strip_all_tags( get_bloginfo( 'description' ) );
if ( $description !== '' ) {
$replacement = $description;
}
}
return $replacement;
}
/**
* Retrieve the site's name for use as replacement string.
*
* The `$replacement` variable is static because it doesn't change depending
* on the context. See https://github.com/Yoast/wordpress-seo/pull/1172#issuecomment-46019482.
*
* @return string|null
*/
private function retrieve_sitename() {
static $replacement;
if ( ! isset( $replacement ) ) {
$sitename = YoastSEO()->helpers->site->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 ( ! empty( $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 ( ! empty( $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 = wp_strip_all_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 = $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;
}
/**
* Retrieve the string generated by get_the_archive_title().
*
* @return string|null
*/
private function retrieve_archive_title() {
return get_the_archive_title();
}
/* *********************** ADVANCED VARIABLES ************************** */
/**
* Determine the page numbering of the current post/page/cpt.
*
* @param string $request Either '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 ( ! empty( $wp_query->max_num_pages ) ) {
$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, '' ) + 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 Either '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;
$post_type = '';
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'] !== [] ) ) ) {
$post_type = $wp_query->query_vars['post_type'];
}
elseif ( isset( $this->args->post_type ) && ( is_string( $this->args->post_type ) && $this->args->post_type !== '' ) ) {
$post_type = $this->args->post_type;
}
else {
// Make it work in preview mode.
$post = $wp_query->get_queried_object();
if ( $post instanceof WP_Post ) {
$post_type = $post->post_type;
}
}
if ( is_array( $post_type ) ) {
$post_type = reset( $post_type );
}
if ( $post_type !== '' ) {
$pt = get_post_type_object( $post_type );
$pt_single = $pt->name;
$pt_plural = $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_to_replace 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_to_replace ) {
$replacement = null;
if ( is_string( $var_to_replace ) && $var_to_replace !== '' ) {
$field = substr( $var_to_replace, 3 );
if ( ! empty( $this->args->ID ) ) {
// Post meta can be arrays and in this case we need to exclude them.
$name = get_post_meta( $this->args->ID, $field, true );
if ( $name !== '' && ! is_array( $name ) ) {
$replacement = $name;
}
}
elseif ( ! empty( $this->args->term_id ) ) {
$name = get_term_meta( $this->args->term_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_to_replace 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_to_replace, $single = false ) {
$replacement = null;
if ( ( is_string( $var_to_replace ) && $var_to_replace !== '' ) && ! empty( $this->args->ID ) ) {
$tax = substr( $var_to_replace, 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_to_replace 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_to_replace ) {
$replacement = null;
if ( is_string( $var_to_replace ) && $var_to_replace !== '' ) {
$tax = substr( $var_to_replace, 8 );
if ( ! empty( $this->args->ID ) ) {
$terms = get_the_terms( $this->args->ID, $tax );
if ( is_array( $terms ) && $terms !== [] ) {
$term = current( $terms );
$term_desc = get_term_field( 'description', $term->term_id, $tax );
if ( $term_desc !== '' ) {
$replacement = wp_strip_all_tags( $term_desc );
}
}
}
}
return $replacement;
}
/**
* Retrieve the current date for use as replacement string.
*
* The `$replacement` variable is static because it doesn't change depending
* on the context. See https://github.com/Yoast/wordpress-seo/pull/1172#issuecomment-46019482.
*
* @return string The formatted current date.
*/
private function retrieve_currentdate() {
static $replacement;
if ( ! isset( $replacement ) ) {
$replacement = date_i18n( get_option( 'date_format' ) );
}
return $replacement;
}
/**
* Retrieve the current day for use as replacement string.
*
* The `$replacement` variable is static because it doesn't change depending
* on the context. See https://github.com/Yoast/wordpress-seo/pull/1172#issuecomment-46019482.
*
* @return string The current day.
*/
private function retrieve_currentday() {
static $replacement;
if ( ! isset( $replacement ) ) {
$replacement = date_i18n( 'j' );
}
return $replacement;
}
/**
* Retrieve the current month for use as replacement string.
*
* The `$replacement` variable is static because it doesn't change depending
* on the context. See https://github.com/Yoast/wordpress-seo/pull/1172#issuecomment-46019482.
*
* @return string The current month.
*/
private function retrieve_currentmonth() {
static $replacement;
if ( ! isset( $replacement ) ) {
$replacement = date_i18n( 'F' );
}
return $replacement;
}
/**
* Retrieve the current time for use as replacement string.
*
* The `$replacement` variable is static because it doesn't change depending
* on the context. See https://github.com/Yoast/wordpress-seo/pull/1172#issuecomment-46019482.
*
* @return string The formatted current time.
*/
private function retrieve_currenttime() {
static $replacement;
if ( ! isset( $replacement ) ) {
$replacement = date_i18n( get_option( 'time_format' ) );
}
return $replacement;
}
/**
* Retrieve the current year for use as replacement string.
*
* The `$replacement` variable is static because it doesn't change depending
* on the context. See https://github.com/Yoast/wordpress-seo/pull/1172#issuecomment-46019482.
*
* @return string The current year.
*/
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() {
// Retrieve focuskw from a Post.
if ( ! empty( $this->args->ID ) ) {
$focus_kw = WPSEO_Meta::get_value( 'focuskw', $this->args->ID );
if ( $focus_kw !== '' ) {
return $focus_kw;
}
return null;
}
// Retrieve focuskw from a Term.
if ( ! empty( $this->args->term_id ) ) {
$focus_kw = WPSEO_Taxonomy_Meta::get_term_meta( $this->args->term_id, $this->args->taxonomy, 'focuskw' );
if ( $focus_kw !== '' ) {
return $focus_kw;
}
}
return null;
}
/**
* 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 ) ) {
// The post/page/cpt ID is an integer, let's cast to string.
$replacement = (string) $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 = YoastSEO()->helpers->date->format_translated( $this->args->post_modified, get_option( 'date_format' ) );
}
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 = (int) $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 string|null
*/
private function retrieve_user_description() {
$replacement = null;
$user_id = (int) $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 ) {
/* translators: 1: current page number, 2: total number of pages. */
$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() {
// The user ID is an integer, let's cast to string.
$replacement = ! empty( $this->args->post_author ) ? (string) $this->args->post_author : (string) get_query_var( 'author' );
return $replacement;
}
/**
* Retrieve the post/page/cpt's published year for use as replacement string.
*
* @return string|null
*/
private function retrieve_post_year() {
if ( empty( $this->args->ID ) ) {
return null;
}
return \get_the_date( 'Y', $this->args->ID );
}
/**
* Retrieve the post/page/cpt's published month for use as replacement string.
*
* @return string|null
*/
private function retrieve_post_month() {
if ( empty( $this->args->ID ) ) {
return null;
}
return \get_the_date( 'F', $this->args->ID );
}
/**
* Retrieve the post/page/cpt's published day for use as replacement string.
*
* @return string|null
*/
private function retrieve_post_day() {
if ( empty( $this->args->ID ) ) {
return null;
}
return \get_the_date( 'd', $this->args->ID );
}
/**
* Retrieve the post/page/cpt author's first name for use as replacement string.
*
* @return string|null
*/
private function retrieve_author_first_name() {
$replacement = null;
$user_id = (int) $this->retrieve_userid();
$name = get_the_author_meta( 'first_name', $user_id );
if ( $name !== '' ) {
$replacement = $name;
}
return $replacement;
}
/**
* Retrieve the post/page/cpt author's last name for use as replacement string.
*
* @return string|null
*/
private function retrieve_author_last_name() {
$replacement = null;
$user_id = (int) $this->retrieve_userid();
$name = get_the_author_meta( 'last_name', $user_id );
if ( $name !== '' ) {
$replacement = $name;
}
return $replacement;
}
/**
* Retrieve the post/page/cpt permalink for use as replacement string.
*
* @return string|null
*/
private function retrieve_permalink() {
if ( empty( $this->args->ID ) ) {
return null;
}
return \get_permalink( $this->args->ID );
}
/**
* Retrieve the post/page/cpt content for use as replacement string.
*
* @return string|null
*/
private function retrieve_post_content() {
$replacement = null;
// The check `post_password_required` is because content must be hidden for a post with a password.
if ( ! empty( $this->args->ID ) && $this->args->post_content !== '' && ! post_password_required( $this->args->ID ) ) {
$content = strip_shortcodes( $this->args->post_content );
$replacement = wp_strip_all_tags( $content );
}
return $replacement;
}
/**
* Retrieve the current or first category title. To be used for import data from AIOSEO.
* The code derives from AIOSEO's way of dealing with that var, so we can ensure 100% seamless transition.
*
* @return string|null
*/
private function retrieve_category_title() {
if ( empty( $this->args ) || empty( $this->args->ID ) ) {
return null;
}
$post_id = $this->args->ID;
$post = get_post( $post_id );
$taxonomies = get_object_taxonomies( $post, 'objects' );
foreach ( $taxonomies as $taxonomy_slug => $taxonomy ) {
if ( ! $taxonomy->hierarchical ) {
continue;
}
$post_terms = get_the_terms( $post_id, $taxonomy_slug );
if ( is_array( $post_terms ) && count( $post_terms ) > 0 ) {
// AiOSEO takes the name of whatever the first hierarchical taxonomy is.
$term = $post_terms[0];
if ( $term ) {
return $term->name;
}
}
}
return null;
}
/* *********************** HELP TEXT RELATED ************************** */
/**
* Set the help text for a user/plugin/theme defined extra variable.
*
* @param string $type Type of variable: 'basic' or 'advanced'.
* @param WPSEO_Replacement_Variable $replacement_variable The replacement variable to register.
*/
private static function register_help_text( $type, WPSEO_Replacement_Variable $replacement_variable ) {
$identifier = $replacement_variable->get_variable();
if ( ( is_string( $type ) && in_array( $type, [ 'basic', 'advanced' ], true ) )
&& ( $identifier !== '' && ! isset( self::$help_texts[ $type ][ $identifier ] ) )
) {
self::$help_texts[ $type ][ $identifier ] = $replacement_variable;
}
}
/**
* Generates a list of replacement variables based on the help texts.
*
* @return array List of replace vars.
*/
public function get_replacement_variables_with_labels() {
self::setup_statics_once();
$custom_variables = [];
foreach ( array_merge( WPSEO_Custom_Fields::get_custom_fields(), WPSEO_Custom_Taxonomies::get_custom_taxonomies() ) as $custom_variable ) {
$custom_variables[ $custom_variable ] = new WPSEO_Replacement_Variable( $custom_variable, $this->get_label( $custom_variable ), '' );
}
$replacement_variables = array_filter(
array_merge( self::$help_texts['basic'], self::$help_texts['advanced'] ),
[ $this, 'is_not_prefixed' ],
ARRAY_FILTER_USE_KEY
);
$hidden = $this->get_hidden_replace_vars();
return array_values(
array_map(
static function ( WPSEO_Replacement_Variable $replacement_variable ) use ( $hidden ) {
$name = $replacement_variable->get_variable();
return [
'name' => $name,
'value' => '',
'label' => $replacement_variable->get_label(),
'hidden' => in_array( $name, $hidden, true ),
];
},
array_merge( $replacement_variables, $custom_variables )
)
);
}
/**
* Generates a list of replacement variables based on the help texts.
*
* @return array List of replace vars.
*/
public function get_replacement_variables_list() {
self::setup_statics_once();
$replacement_variables = array_merge(
$this->get_replacement_variables(),
WPSEO_Custom_Fields::get_custom_fields(),
WPSEO_Custom_Taxonomies::get_custom_taxonomies()
);
return array_map( [ $this, 'format_replacement_variable' ], $replacement_variables );
}
/**
* Creates a merged associative array of both the basic and advanced help texts.
*
* @return array Array with the replacement variables.
*/
private function get_replacement_variables() {
$help_texts = array_merge( self::$help_texts['basic'], self::$help_texts['advanced'] );
return array_filter( array_keys( $help_texts ), [ $this, 'is_not_prefixed' ] );
}
/**
* Checks whether the replacement variable contains a `ct_` or `cf_` prefix, because they follow different logic.
*
* @param string $replacement_variable The replacement variable.
*
* @return bool True when the replacement variable is not prefixed.
*/
private function is_not_prefixed( $replacement_variable ) {
$prefixes = [ 'cf_', 'ct_' ];
$prefix = $this->get_prefix( $replacement_variable );
return ! in_array( $prefix, $prefixes, true );
}
/**
* Strip the prefix from a replacement variable name.
*
* @param string $replacement_variable The replacement variable.
*
* @return string The replacement variable name without the prefix.
*/
private function strip_prefix( $replacement_variable ) {
return substr( $replacement_variable, 3 );
}
/**
* Gets the prefix from a replacement variable name.
*
* @param string $replacement_variable The replacement variable.
*
* @return string The prefix of the replacement variable.
*/
private function get_prefix( $replacement_variable ) {
return substr( $replacement_variable, 0, 3 );
}
/**
* Strips 'desc_' if present, and appends ' description' at the end.
*
* @param string $label The replacement variable.
*
* @return string The altered replacement variable name.
*/
private function handle_description( $label ) {
if ( strpos( $label, 'desc_' ) === 0 ) {
return substr( $label, 5 ) . ' description';
}
return $label;
}
/**
* Creates a label for prefixed replacement variables that matches the format in the editors.
*
* @param string $replacement_variable The replacement variable.
*
* @return string The replacement variable label.
*/
private function get_label( $replacement_variable ) {
$prefix = $this->get_prefix( $replacement_variable );
if ( $prefix === 'cf_' ) {
return $this->strip_prefix( $replacement_variable ) . ' (custom field)';
}
if ( $prefix === 'ct_' ) {
$label = $this->strip_prefix( $replacement_variable );
$label = $this->handle_description( $label );
return ucfirst( $label . ' (custom taxonomy)' );
}
if ( $prefix === 'pt_' ) {
if ( $replacement_variable === 'pt_single' ) {
return 'Post type (singular)';
}
return 'Post type (plural)';
}
return '';
}
/**
* Formats the replacement variables.
*
* @param string $replacement_variable The replacement variable to format.
*
* @return array The formatted replacement variable.
*/
private function format_replacement_variable( $replacement_variable ) {
return [
'name' => $replacement_variable,
'value' => '',
'label' => $this->get_label( $replacement_variable ),
];
}
/**
* Set/translate the help texts for the WPSEO standard basic variables.
*/
private static function set_basic_help_texts() {
/* translators: %s: wp_title() function. */
$separator_description = __( 'The separator defined in your theme\'s %s tag.', 'wordpress-seo' );
$separator_description = sprintf(
$separator_description,
// 'wp_title()'
'wp_title()'
);
$replacement_variables = [
new WPSEO_Replacement_Variable( 'date', __( 'Date', 'wordpress-seo' ), __( 'Replaced with the date of the post/page', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'title', __( 'Title', 'wordpress-seo' ), __( 'Replaced with the title of the post/page', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'parent_title', __( 'Parent title', 'wordpress-seo' ), __( 'Replaced with the title of the parent page of the current page', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'archive_title', __( 'Archive title', 'wordpress-seo' ), __( 'Replaced with the normal title for an archive generated by WordPress', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'sitename', __( 'Site title', 'wordpress-seo' ), __( 'The site\'s name', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'sitedesc', __( 'Tagline', 'wordpress-seo' ), __( 'The site\'s tagline', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'excerpt', __( 'Excerpt', 'wordpress-seo' ), __( 'Replaced with the post/page excerpt (or auto-generated if it does not exist)', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'excerpt_only', __( 'Excerpt only', 'wordpress-seo' ), __( 'Replaced with the post/page excerpt (without auto-generation)', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'tag', __( 'Tag', 'wordpress-seo' ), __( 'Replaced with the current tag/tags', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'category', __( 'Category', 'wordpress-seo' ), __( 'Replaced with the post categories (comma separated)', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'primary_category', __( 'Primary category', 'wordpress-seo' ), __( 'Replaced with the primary category of the post/page', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'category_description', __( 'Category description', 'wordpress-seo' ), __( 'Replaced with the category description', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'tag_description', __( 'Tag description', 'wordpress-seo' ), __( 'Replaced with the tag description', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'term_description', __( 'Term description', 'wordpress-seo' ), __( 'Replaced with the term description', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'term_title', __( 'Term title', 'wordpress-seo' ), __( 'Replaced with the term name', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'searchphrase', __( 'Search phrase', 'wordpress-seo' ), __( 'Replaced with the current search phrase', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'term_hierarchy', __( 'Term hierarchy', 'wordpress-seo' ), __( 'Replaced with the term ancestors hierarchy', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'sep', __( 'Separator', 'wordpress-seo' ), $separator_description ),
new WPSEO_Replacement_Variable( 'currentdate', __( 'Current date', 'wordpress-seo' ), __( 'Replaced with the current date', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'currentyear', __( 'Current year', 'wordpress-seo' ), __( 'Replaced with the current year', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'currentmonth', __( 'Current month', 'wordpress-seo' ), __( 'Replaced with the current month', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'currentday', __( 'Current day', 'wordpress-seo' ), __( 'Replaced with the current day', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'post_year', __( 'Post year', 'wordpress-seo' ), __( 'Replaced with the year the post was published', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'post_month', __( 'Post month', 'wordpress-seo' ), __( 'Replaced with the month the post was published', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'post_day', __( 'Post day', 'wordpress-seo' ), __( 'Replaced with the day the post was published', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'author_first_name', __( 'Author first name', 'wordpress-seo' ), __( 'Replaced with the first name of the author', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'author_last_name', __( 'Author last name', 'wordpress-seo' ), __( 'Replaced with the last name of the author', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'permalink', __( 'Permalink', 'wordpress-seo' ), __( 'Replaced with the permalink', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'post_content', __( 'Post Content', 'wordpress-seo' ), __( 'Replaced with the post content', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'category_title', __( 'Category Title', 'wordpress-seo' ), __( 'Current or first category title', 'wordpress-seo' ) ),
];
foreach ( $replacement_variables as $replacement_variable ) {
self::register_help_text( 'basic', $replacement_variable );
}
}
/**
* Set/translate the help texts for the WPSEO standard advanced variables.
*/
private static function set_advanced_help_texts() {
$replacement_variables = [
new WPSEO_Replacement_Variable( 'pt_single', __( 'Post type (singular)', 'wordpress-seo' ), __( 'Replaced with the content type single label', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'pt_plural', __( 'Post type (plural)', 'wordpress-seo' ), __( 'Replaced with the content type plural label', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'modified', __( 'Modified', 'wordpress-seo' ), __( 'Replaced with the post/page modified time', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'id', __( 'ID', 'wordpress-seo' ), __( 'Replaced with the post/page ID', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'name', __( 'Name', 'wordpress-seo' ), __( 'Replaced with the post/page author\'s \'nicename\'', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'user_description', __( 'User description', 'wordpress-seo' ), __( 'Replaced with the post/page author\'s \'Biographical Info\'', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'page', __( 'Page', 'wordpress-seo' ), __( 'Replaced with the current page number with context (i.e. page 2 of 4)', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'pagetotal', __( 'Pagetotal', 'wordpress-seo' ), __( 'Replaced with the current page total', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'pagenumber', __( 'Pagenumber', 'wordpress-seo' ), __( 'Replaced with the current page number', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'caption', __( 'Caption', 'wordpress-seo' ), __( 'Attachment caption', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'focuskw', __( 'Focus keyword', 'wordpress-seo' ), __( 'Replaced with the posts focus keyphrase', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'term404', __( 'Term404', 'wordpress-seo' ), __( 'Replaced with the slug which caused the 404', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'cf_', ' ' . __( '(custom field)', 'wordpress-seo' ), __( 'Replaced with a posts custom field value', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'ct_', ' ' . __( '(custom taxonomy)', 'wordpress-seo' ), __( 'Replaced with a posts custom taxonomies, comma separated.', 'wordpress-seo' ) ),
new WPSEO_Replacement_Variable( 'ct_desc_', ' ' . __( 'description (custom taxonomy)', 'wordpress-seo' ), __( 'Replaced with a custom taxonomies description', 'wordpress-seo' ) ),
];
foreach ( $replacement_variables as $replacement_variable ) {
self::register_help_text( 'advanced', $replacement_variable );
}
}
/* *********************** GENERAL HELPER METHODS ************************** */
/**
* Remove the '%%' delimiters from a variable string.
*
* @param string $text Variable string to be cleaned.
*
* @return string
*/
private static function remove_var_delimiter( $text ) {
return trim( $text, '%' );
}
/**
* Add the '%%' delimiters to a variable string.
*
* @param string $text Variable string to be delimited.
*
* @return string
*/
private static function add_var_delimiter( $text ) {
return '%%' . $text . '%%';
}
/**
* 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 ( ! empty( $this->args->term_id ) ) {
$output = $this->args->name;
}
elseif ( ! empty( $id ) && ! empty( $taxonomy ) ) {
$terms = get_the_terms( $id, $taxonomy );
if ( is_array( $terms ) && $terms !== [] ) {
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_%% variables.
*
* @api string $output Comma-delimited string containing the terms.
* @api string $taxonomy The taxonomy of the terms.
*/
return apply_filters( 'wpseo_terms', $output, $taxonomy );
}
/**
* Gets a taxonomy term hierarchy including the term to get the parents for.
*
* @return string
*/
private function get_term_hierarchy() {
if ( ! is_taxonomy_hierarchical( $this->args->taxonomy ) ) {
return '';
}
$separator = ' ' . $this->retrieve_sep() . ' ';
$args = [
'format' => 'name',
'separator' => $separator,
'link' => false,
'inclusive' => true,
];
return rtrim(
get_term_parents_list( $this->args->term_id, $this->args->taxonomy, $args ),
$separator
);
}
/**
* Retrieves the term ancestors hierarchy.
*
* @return string|null The term ancestors hierarchy.
*/
private function retrieve_term_hierarchy() {
$replacement = null;
if ( ! empty( $this->args->term_id ) && ! empty( $this->args->taxonomy ) ) {
$hierarchy = $this->get_term_hierarchy();
if ( $hierarchy !== '' ) {
$replacement = esc_html( $hierarchy );
}
}
return $replacement;
}
}