->ID = 0;
}
$this->data = $data;
$this->ID = (int) $data->ID;
$this->for_site( $site_id );
}
/**
* Returns only the main user fields.
*
* @since 3.3.0
* @since 4.4.0 Added 'ID' as an alias of 'id' for the `$field` parameter.
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param string $field The field to query against: Accepts 'id', 'ID', 'slug', 'email' or 'login'.
* @param string|int $value The field value.
* @return object|false Raw user object.
*/
public static function get_data_by( $field, $value ) {
global $wpdb;
// 'ID' is an alias of 'id'.
if ( 'ID' === $field ) {
$field = 'id';
}
if ( 'id' === $field ) {
// Make sure the value is numeric to avoid casting objects, for example, to int 1.
if ( ! is_numeric( $value ) ) {
return false;
}
$value = (int) $value;
if ( $value < 1 ) {
return false;
}
} else {
$value = trim( $value );
}
if ( ! $value ) {
return false;
}
switch ( $field ) {
case 'id':
$user_id = $value;
$db_field = 'ID';
break;
case 'slug':
$user_id = wp_cache_get( $value, 'userslugs' );
$db_field = 'user_nicename';
break;
case 'email':
$user_id = wp_cache_get( $value, 'useremail' );
$db_field = 'user_email';
break;
case 'login':
$value = sanitize_user( $value );
$user_id = wp_cache_get( $value, 'userlogins' );
$db_field = 'user_login';
break;
default:
return false;
}
if ( false !== $user_id ) {
$user = wp_cache_get( $user_id, 'users' );
if ( $user ) {
return $user;
}
}
$user = $wpdb->get_row(
$wpdb->prepare(
"SELECT * FROM $wpdb->users WHERE $db_field = %s LIMIT 1",
$value
)
);
if ( ! $user ) {
return false;
}
update_user_caches( $user );
return $user;
}
/**
* Magic method for checking the existence of a certain custom field.
*
* @since 3.3.0
*
* @param string $key User meta key to check if set.
* @return bool Whether the given user meta key is set.
*/
public function __isset( $key ) {
if ( 'id' === $key ) {
_deprecated_argument(
'WP_User->id',
'2.1.0',
sprintf(
/* translators: %s: WP_User->ID */
__( 'Use %s instead.' ),
'WP_User->ID
'
)
);
$key = 'ID';
}
if ( isset( $this->data->$key ) ) {
return true;
}
if ( isset( self::$back_compat_keys[ $key ] ) ) {
$key = self::$back_compat_keys[ $key ];
}
return metadata_exists( 'user', $this->ID, $key );
}
/**
* Magic method for accessing custom fields.
*
* @since 3.3.0
*
* @param string $key User meta key to retrieve.
* @return mixed Value of the given user meta key (if set). If `$key` is 'id', the user ID.
*/
public function __get( $key ) {
if ( 'id' === $key ) {
_deprecated_argument(
'WP_User->id',
'2.1.0',
sprintf(
/* translators: %s: WP_User->ID */
__( 'Use %s instead.' ),
'WP_User->ID
'
)
);
return $this->ID;
}
if ( isset( $this->data->$key ) ) {
$value = $this->data->$key;
} else {
if ( isset( self::$back_compat_keys[ $key ] ) ) {
$key = self::$back_compat_keys[ $key ];
}
$value = get_user_meta( $this->ID, $key, true );
}
if ( $this->filter ) {
$value = sanitize_user_field( $key, $value, $this->ID, $this->filter );
}
return $value;
}
/**
* Magic method for setting custom user fields.
*
* This method does not update custom fields in the database. It only stores
* the value on the WP_User instance.
*
* @since 3.3.0
*
* @param string $key User meta key.
* @param mixed $value User meta value.
*/
public function __set( $key, $value ) {
if ( 'id' === $key ) {
_deprecated_argument(
'WP_User->id',
'2.1.0',
sprintf(
/* translators: %s: WP_User->ID */
__( 'Use %s instead.' ),
'WP_User->ID
'
)
);
$this->ID = $value;
return;
}
$this->data->$key = $value;
}
/**
* Magic method for unsetting a certain custom field.
*
* @since 4.4.0
*
* @param string $key User meta key to unset.
*/
public function __unset( $key ) {
if ( 'id' === $key ) {
_deprecated_argument(
'WP_User->id',
'2.1.0',
sprintf(
/* translators: %s: WP_User->ID */
__( 'Use %s instead.' ),
'WP_User->ID
'
)
);
}
if ( isset( $this->data->$key ) ) {
unset( $this->data->$key );
}
if ( isset( self::$back_compat_keys[ $key ] ) ) {
unset( self::$back_compat_keys[ $key ] );
}
}
/**
* Determines whether the user exists in the database.
*
* @since 3.4.0
*
* @return bool True if user exists in the database, false if not.
*/
public function exists() {
return ! empty( $this->ID );
}
/**
* Retrieves the value of a property or meta key.
*
* Retrieves from the users and usermeta table.
*
* @since 3.3.0
*
* @param string $key Property
* @return mixed
*/
public function get( $key ) {
return $this->__get( $key );
}
/**
* Determines whether a property or meta key is set.
*
* Consults the users and usermeta tables.
*
* @since 3.3.0
*
* @param string $key Property.
* @return bool
*/
public function has_prop( $key ) {
return $this->__isset( $key );
}
/**
* Returns an array representation.
*
* @since 3.5.0
*
* @return array Array representation.
*/
public function to_array() {
return get_object_vars( $this->data );
}
/**
* Makes private/protected methods readable for backward compatibility.
*
* @since 4.3.0
*
* @param string $name Method to call.
* @param array $arguments Arguments to pass when calling.
* @return mixed|false Return value of the callback, false otherwise.
*/
public function __call( $name, $arguments ) {
if ( '_init_caps' === $name ) {
return $this->_init_caps( ...$arguments );
}
return false;
}
/**
* Sets up capability object properties.
*
* Will set the value for the 'cap_key' property to current database table
* prefix, followed by 'capabilities'. Will then check to see if the
* property matching the 'cap_key' exists and is an array. If so, it will be
* used.
*
* @since 2.1.0
* @deprecated 4.9.0 Use WP_User::for_site()
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param string $cap_key Optional capability key
*/
protected function _init_caps( $cap_key = '' ) {
global $wpdb;
_deprecated_function( __METHOD__, '4.9.0', 'WP_User::for_site()' );
if ( empty( $cap_key ) ) {
$this->cap_key = $wpdb->get_blog_prefix( $this->site_id ) . 'capabilities';
} else {
$this->cap_key = $cap_key;
}
$this->caps = $this->get_caps_data();
$this->get_role_caps();
}
/**
* Retrieves all of the capabilities of the user's roles, and merges them with
* individual user capabilities.
*
* All of the capabilities of the user's roles are merged with the user's individual
* capabilities. This means that the user can be denied specific capabilities that
* their role might have, but the user is specifically denied.
*
* @since 2.0.0
*
* @return bool[] Array of key/value pairs where keys represent a capability name
* and boolean values represent whether the user has that capability.
*/
public function get_role_caps() {
$switch_site = false;
if ( is_multisite() && get_current_blog_id() !== $this->site_id ) {
$switch_site = true;
switch_to_blog( $this->site_id );
}
$wp_roles = wp_roles();
// Filter out caps that are not role names and assign to $this->roles.
if ( is_array( $this->caps ) ) {
$this->roles = array_filter( array_keys( $this->caps ), array( $wp_roles, 'is_role' ) );
}
// Build $allcaps from role caps, overlay user's $caps.
$this->allcaps = array();
foreach ( (array) $this->roles as $role ) {
$the_role = $wp_roles->get_role( $role );
$this->allcaps = array_merge( (array) $this->allcaps, (array) $the_role->capabilities );
}
$this->allcaps = array_merge( (array) $this->allcaps, (array) $this->caps );
if ( $switch_site ) {
restore_current_blog();
}
return $this->allcaps;
}
/**
* Adds role to user.
*
* Updates the user's meta data option with capabilities and roles.
*
* @since 2.0.0
*
* @param string $role Role name.
*/
public function add_role( $role ) {
if ( empty( $role ) ) {
return;
}
if ( in_array( $role, $this->roles, true ) ) {
return;
}
$this->caps[ $role ] = true;
update_user_meta( $this->ID, $this->cap_key, $this->caps );
$this->get_role_caps();
$this->update_user_level_from_caps();
/**
* Fires immediately after the user has been given a new role.
*
* @since 4.3.0
*
* @param int $user_id The user ID.
* @param string $role The new role.
*/
do_action( 'add_user_role', $this->ID, $role );
}
/**
* Removes role from user.
*
* @since 2.0.0
*
* @param string $role Role name.
*/
public function remove_role( $role ) {
if ( ! in_array( $role, $this->roles, true ) ) {
return;
}
unset( $this->caps[ $role ] );
update_user_meta( $this->ID, $this->cap_key, $this->caps );
$this->get_role_caps();
$this->update_user_level_from_caps();
/**
* Fires immediately after a role as been removed from a user.
*
* @since 4.3.0
*
* @param int $user_id The user ID.
* @param string $role The removed role.
*/
do_action( 'remove_user_role', $this->ID, $role );
}
/**
* Sets the role of the user.
*
* This will remove the previous roles of the user and assign the user the
* new one. You can set the role to an empty string and it will remove all
* of the roles from the user.
*
* @since 2.0.0
*
* @param string $role Role name.
*/
public function set_role( $role ) {
if ( 1 === count( $this->roles ) && current( $this->roles ) === $role ) {
return;
}
foreach ( (array) $this->roles as $oldrole ) {
unset( $this->caps[ $oldrole ] );
}
$old_roles = $this->roles;
if ( ! empty( $role ) ) {
$this->caps[ $role ] = true;
$this->roles = array( $role => true );
} else {
$this->roles = array();
}
update_user_meta( $this->ID, $this->cap_key, $this->caps );
$this->get_role_caps();
$this->update_user_level_from_caps();
foreach ( $old_roles as $old_role ) {
if ( ! $old_role || $old_role === $role ) {
continue;
}
/** This action is documented in wp-includes/class-wp-user.php */
do_action( 'remove_user_role', $this->ID, $old_role );
}
if ( $role && ! in_array( $role, $old_roles, true ) ) {
/** This action is documented in wp-includes/class-wp-user.php */
do_action( 'add_user_role', $this->ID, $role );
}
/**
* Fires after the user's role has changed.
*
* @since 2.9.0
* @since 3.6.0 Added $old_roles to include an array of the user's previous roles.
*
* @param int $user_id The user ID.
* @param string $role The new role.
* @param string[] $old_roles An array of the user's previous roles.
*/
do_action( 'set_user_role', $this->ID, $role, $old_roles );
}
/**
* Chooses the maximum level the user has.
*
* Will compare the level from the $item parameter against the $max
* parameter. If the item is incorrect, then just the $max parameter value
* will be returned.
*
* Used to get the max level based on the capabilities the user has. This
* is also based on roles, so if the user is assigned the Administrator role
* then the capability 'level_10' will exist and the user will get that
* value.
*
* @since 2.0.0
*
* @param int $max Max level of user.
* @param string $item Level capability name.
* @return int Max Level.
*/
public function level_reduction( $max, $item ) {
if ( preg_match( '/^level_(10|[0-9])$/i', $item, $matches ) ) {
$level = (int) $matches[1];
return max( $max, $level );
} else {
return $max;
}
}
/**
* Updates the maximum user level for the user.
*
* Updates the 'user_level' user metadata (includes prefix that is the
* database table prefix) with the maximum user level. Gets the value from
* the all of the capabilities that the user has.
*
* @since 2.0.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*/
public function update_user_level_from_caps() {
global $wpdb;
$this->user_level = array_reduce( array_keys( $this->allcaps ), array( $this, 'level_reduction' ), 0 );
update_user_meta( $this->ID, $wpdb->get_blog_prefix() . 'user_level', $this->user_level );
}
/**
* Adds capability and grant or deny access to capability.
*
* @since 2.0.0
*
* @param string $cap Capability name.
* @param bool $grant Whether to grant capability to user.
*/
public function add_cap( $cap, $grant = true ) {
$this->caps[ $cap ] = $grant;
update_user_meta( $this->ID, $this->cap_key, $this->caps );
$this->get_role_caps();
$this->update_user_level_from_caps();
}
/**
* Removes capability from user.
*
* @since 2.0.0
*
* @param string $cap Capability name.
*/
public function remove_cap( $cap ) {
if ( ! isset( $this->caps[ $cap ] ) ) {
return;
}
unset( $this->caps[ $cap ] );
update_user_meta( $this->ID, $this->cap_key, $this->caps );
$this->get_role_caps();
$this->update_user_level_from_caps();
}
/**
* Removes all of the capabilities of the user.
*
* @since 2.1.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*/
public function remove_all_caps() {
global $wpdb;
$this->caps = array();
delete_user_meta( $this->ID, $this->cap_key );
delete_user_meta( $this->ID, $wpdb->get_blog_prefix() . 'user_level' );
$this->get_role_caps();
}
/**
* Returns whether the user has the specified capability.
*
* This function also accepts an ID of an object to check against if the capability is a meta capability. Meta
* capabilities such as `edit_post` and `edit_user` are capabilities used by the `map_meta_cap()` function to
* map to primitive capabilities that a user or role has, such as `edit_posts` and `edit_others_posts`.
*
* Example usage:
*
* $user->has_cap( 'edit_posts' );
* $user->has_cap( 'edit_post', $post->ID );
* $user->has_cap( 'edit_post_meta', $post->ID, $meta_key );
*
* While checking against a role in place of a capability is supported in part, this practice is discouraged as it
* may produce unreliable results.
*
* @since 2.0.0
* @since 5.3.0 Formalized the existing and already documented `...$args` parameter
* by adding it to the function signature.
*
* @see map_meta_cap()
*
* @param string $cap Capability name.
* @param mixed ...$args Optional further parameters, typically starting with an object ID.
* @return bool Whether the user has the given capability, or, if an object ID is passed, whether the user has
* the given capability for that object.
*/
public function has_cap( $cap, ...$args ) {
if ( is_numeric( $cap ) ) {
_deprecated_argument( __FUNCTION__, '2.0.0', __( 'Usage of user levels is deprecated. Use capabilities instead.' ) );
$cap = $this->translate_level_to_cap( $cap );
}
$caps = map_meta_cap( $cap, $this->ID, ...$args );
// Multisite super admin has all caps by definition, Unless specifically denied.
if ( is_multisite() && is_super_admin( $this->ID ) ) {
if ( in_array( 'do_not_allow', $caps, true ) ) {
return false;
}
return true;
}
// Maintain BC for the argument passed to the "user_has_cap" filter.
$args = array_merge( array( $cap, $this->ID ), $args );
/**
* Dynamically filter a user's capabilities.
*
* @since 2.0.0
* @since 3.7.0 Added the `$user` parameter.
*
* @param bool[] $allcaps Array of key/value pairs where keys represent a capability name
* and boolean values represent whether the user has that capability.
* @param string[] $caps Required primitive capabilities for the requested capability.
* @param array $args {
* Arguments that accompany the requested capability check.
*
* @type string $0 Requested capability.
* @type int $1 Concerned user ID.
* @type mixed ...$2 Optional second and further parameters, typically object ID.
* }
* @param WP_User $user The user object.
*/
$capabilities = apply_filters( 'user_has_cap', $this->allcaps, $caps, $args, $this );
// Everyone is allowed to exist.
$capabilities['exist'] = true;
// Nobody is allowed to do things they are not allowed to do.
unset( $capabilities['do_not_allow'] );
// Must have ALL requested caps.
foreach ( (array) $caps as $cap ) {
if ( empty( $capabilities[ $cap ] ) ) {
return false;
}
}
return true;
}
/**
* Converts numeric level to level capability name.
*
* Prepends 'level_' to level number.
*
* @since 2.0.0
*
* @param int $level Level number, 1 to 10.
* @return string
*/
public function translate_level_to_cap( $level ) {
return 'level_' . $level;
}
/**
* Sets the site to operate on. Defaults to the current site.
*
* @since 3.0.0
* @deprecated 4.9.0 Use WP_User::for_site()
*
* @param int $blog_id Optional. Site ID, defaults to current site.
*/
public function for_blog( $blog_id = '' ) {
_deprecated_function( __METHOD__, '4.9.0', 'WP_User::for_site()' );
$this->for_site( $blog_id );
}
/**
* Sets the site to operate on. Defaults to the current site.
*
* @since 4.9.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param int $site_id Site ID to initialize user capabilities for. Default is the current site.
*/
public function for_site( $site_id = '' ) {
global $wpdb;
if ( ! empty( $site_id ) ) {
$this->site_id = absint( $site_id );
} else {
$this->site_id = get_current_blog_id();
}
$this->cap_key = $wpdb->get_blog_prefix( $this->site_id ) . 'capabilities';
$this->caps = $this->get_caps_data();
$this->get_role_caps();
}
/**
* Gets the ID of the site for which the user's capabilities are currently initialized.
*
* @since 4.9.0
*
* @return int Site ID.
*/
public function get_site_id() {
return $this->site_id;
}
/**
* Gets the available user capabilities data.
*
* @since 4.9.0
*
* @return bool[] List of capabilities keyed by the capability name,
* e.g. `array( 'edit_posts' => true, 'delete_posts' => false )`.
*/
private function get_caps_data() {
$caps = get_user_meta( $this->ID, $this->cap_key, true );
if ( ! is_array( $caps ) ) {
return array();
}
return $caps;
}
}
urn string|null The edit term link URL for the given term, or null on failure.
*/
function get_edit_term_link( $term, $taxonomy = '', $object_type = '' ) {
$term = get_term( $term, $taxonomy );
if ( ! $term || is_wp_error( $term ) ) {
return;
}
$tax = get_taxonomy( $term->taxonomy );
$term_id = $term->term_id;
if ( ! $tax || ! current_user_can( 'edit_term', $term_id ) ) {
return;
}
$args = array(
'taxonomy' => $taxonomy,
'tag_ID' => $term_id,
);
if ( $object_type ) {
$args['post_type'] = $object_type;
} elseif ( ! empty( $tax->object_type ) ) {
$args['post_type'] = reset( $tax->object_type );
}
if ( $tax->show_ui ) {
$location = add_query_arg( $args, admin_url( 'term.php' ) );
} else {
$location = '';
}
/**
* Filters the edit link for a term.
*
* @since 3.1.0
*
* @param string $location The edit link.
* @param int $term_id Term ID.
* @param string $taxonomy Taxonomy name.
* @param string $object_type The object type.
*/
return apply_filters( 'get_edit_term_link', $location, $term_id, $taxonomy, $object_type );
}
/**
* Displays or retrieves the edit term link with formatting.
*
* @since 3.1.0
*
* @param string $link Optional. Anchor text. If empty, default is 'Edit This'. Default empty.
* @param string $before Optional. Display before edit link. Default empty.
* @param string $after Optional. Display after edit link. Default empty.
* @param int|WP_Term|null $term Optional. Term ID or object. If null, the queried object will be inspected. Default null.
* @param bool $display Optional. Whether or not to echo the return. Default true.
* @return string|void HTML content.
*/
function edit_term_link( $link = '', $before = '', $after = '', $term = null, $display = true ) {
if ( is_null( $term ) ) {
$term = get_queried_object();
} else {
$term = get_term( $term );
}
if ( ! $term ) {
return;
}
$tax = get_taxonomy( $term->taxonomy );
if ( ! current_user_can( 'edit_term', $term->term_id ) ) {
return;
}
if ( empty( $link ) ) {
$link = __( 'Edit This' );
}
$link = '' . $link . '';
/**
* Filters the anchor tag for the edit link of a term.
*
* @since 3.1.0
*
* @param string $link The anchor tag for the edit link.
* @param int $term_id Term ID.
*/
$link = $before . apply_filters( 'edit_term_link', $link, $term->term_id ) . $after;
if ( $display ) {
echo $link;
} else {
return $link;
}
}
/**
* Retrieves the permalink for a search.
*
* @since 3.0.0
*
* @global WP_Rewrite $wp_rewrite WordPress rewrite component.
*
* @param string $query Optional. The query string to use. If empty the current query is used. Default empty.
* @return string The search permalink.
*/
function get_search_link( $query = '' ) {
global $wp_rewrite;
if ( empty( $query ) ) {
$search = get_search_query( false );
} else {
$search = stripslashes( $query );
}
$permastruct = $wp_rewrite->get_search_permastruct();
if ( empty( $permastruct ) ) {
$link = home_url( '?s=' . urlencode( $search ) );
} else {
$search = urlencode( $search );
$search = str_replace( '%2F', '/', $search ); // %2F(/) is not valid within a URL, send it un-encoded.
$link = str_replace( '%search%', $search, $permastruct );
$link = home_url( user_trailingslashit( $link, 'search' ) );
}
/**
* Filters the search permalink.
*
* @since 3.0.0
*
* @param string $link Search permalink.
* @param string $search The URL-encoded search term.
*/
return apply_filters( 'search_link', $link, $search );
}
/**
* Retrieves the permalink for the search results feed.
*
* @since 2.5.0
*
* @global WP_Rewrite $wp_rewrite WordPress rewrite component.
*
* @param string $search_query Optional. Search query. Default empty.
* @param string $feed Optional. Feed type. Possible values include 'rss2', 'atom'.
* Default is the value of get_default_feed().
* @return string The search results feed permalink.
*/
function get_search_feed_link( $search_query = '', $feed = '' ) {
global $wp_rewrite;
$link = get_search_link( $search_query );
if ( empty( $feed ) ) {
$feed = get_default_feed();
}
$permastruct = $wp_rewrite->get_search_permastruct();
if ( empty( $permastruct ) ) {
$link = add_query_arg( 'feed', $feed, $link );
} else {
$link = trailingslashit( $link );
$link .= "feed/$feed/";
}
/**
* Filters the search feed link.
*
* @since 2.5.0
*
* @param string $link Search feed link.
* @param string $feed Feed type. Possible values include 'rss2', 'atom'.
* @param string $type The search type. One of 'posts' or 'comments'.
*/
return apply_filters( 'search_feed_link', $link, $feed, 'posts' );
}
/**
* Retrieves the permalink for the search results comments feed.
*
* @since 2.5.0
*
* @global WP_Rewrite $wp_rewrite WordPress rewrite component.
*
* @param string $search_query Optional. Search query. Default empty.
* @param string $feed Optional. Feed type. Possible values include 'rss2', 'atom'.
* Default is the value of get_default_feed().
* @return string The comments feed search results permalink.
*/
function get_search_comments_feed_link( $search_query = '', $feed = '' ) {
global $wp_rewrite;
if ( empty( $feed ) ) {
$feed = get_default_feed();
}
$link = get_search_feed_link( $search_query, $feed );
$permastruct = $wp_rewrite->get_search_permastruct();
if ( empty( $permastruct ) ) {
$link = add_query_arg( 'feed', 'comments-' . $feed, $link );
} else {
$link = add_query_arg( 'withcomments', 1, $link );
}
/** This filter is documented in wp-includes/link-template.php */
return apply_filters( 'search_feed_link', $link, $feed, 'comments' );
}
/**
* Retrieves the permalink for a post type archive.
*
* @since 3.1.0
* @since 4.5.0 Support for posts was added.
*
* @global WP_Rewrite $wp_rewrite WordPress rewrite component.
*
* @param string $post_type Post type.
* @return string|false The post type archive permalink. False if the post type
* does not exist or does not have an archive.
*/
function get_post_type_archive_link( $post_type ) {
global $wp_rewrite;
$post_type_obj = get_post_type_object( $post_type );
if ( ! $post_type_obj ) {
return false;
}
if ( 'post' === $post_type ) {
$show_on_front = get_option( 'show_on_front' );
$page_for_posts = get_option( 'page_for_posts' );
if ( 'page' === $show_on_front && $page_for_posts ) {
$link = get_permalink( $page_for_posts );
} else {
$link = get_home_url();
}
/** This filter is documented in wp-includes/link-template.php */
return apply_filters( 'post_type_archive_link', $link, $post_type );
}
if ( ! $post_type_obj->has_archive ) {
return false;
}
if ( get_option( 'permalink_structure' ) && is_array( $post_type_obj->rewrite ) ) {
$struct = ( true === $post_type_obj->has_archive ) ? $post_type_obj->rewrite['slug'] : $post_type_obj->has_archive;
if ( $post_type_obj->rewrite['with_front'] ) {
$struct = $wp_rewrite->front . $struct;
} else {
$struct = $wp_rewrite->root . $struct;
}
$link = home_url( user_trailingslashit( $struct, 'post_type_archive' ) );
} else {
$link = home_url( '?post_type=' . $post_type );
}
/**
* Filters the post type archive permalink.
*
* @since 3.1.0
*
* @param string $link The post type archive permalink.
* @param string $post_type Post type name.
*/
return apply_filters( 'post_type_archive_link', $link, $post_type );
}
/**
* Retrieves the permalink for a post type archive feed.
*
* @since 3.1.0
*
* @param string $post_type Post type.
* @param string $feed Optional. Feed type. Possible values include 'rss2', 'atom'.
* Default is the value of get_default_feed().
* @return string|false The post type feed permalink. False if the post type
* does not exist or does not have an archive.
*/
function get_post_type_archive_feed_link( $post_type, $feed = '' ) {
$default_feed = get_default_feed();
if ( empty( $feed ) ) {
$feed = $default_feed;
}
$link = get_post_type_archive_link( $post_type );
if ( ! $link ) {
return false;
}
$post_type_obj = get_post_type_object( $post_type );
if ( get_option( 'permalink_structure' ) && is_array( $post_type_obj->rewrite ) && $post_type_obj->rewrite['feeds'] ) {
$link = trailingslashit( $link );
$link .= 'feed/';
if ( $feed != $default_feed ) {
$link .= "$feed/";
}
} else {
$link = add_query_arg( 'feed', $feed, $link );
}
/**
* Filters the post type archive feed link.
*
* @since 3.1.0
*
* @param string $link The post type archive feed link.
* @param string $feed Feed type. Possible values include 'rss2', 'atom'.
*/
return apply_filters( 'post_type_archive_feed_link', $link, $feed );
}
/**
* Retrieves the URL used for the post preview.
*
* Allows additional query args to be appended.
*
* @since 4.4.0
*
* @param int|WP_Post $post Optional. Post ID or `WP_Post` object. Defaults to global `$post`.
* @param array $query_args Optional. Array of additional query args to be appended to the link.
* Default empty array.
* @param string $preview_link Optional. Base preview link to be used if it should differ from the
* post permalink. Default empty.
* @return string|null URL used for the post preview, or null if the post does not exist.
*/
function get_preview_post_link( $post = null, $query_args = array(), $preview_link = '' ) {
$post = get_post( $post );
if ( ! $post ) {
return;
}
$post_type_object = get_post_type_object( $post->post_type );
if ( is_post_type_viewable( $post_type_object ) ) {
if ( ! $preview_link ) {
$preview_link = set_url_scheme( get_permalink( $post ) );
}
$query_args['preview'] = 'true';
$preview_link = add_query_arg( $query_args, $preview_link );
}
/**
* Filters the URL used for a post preview.
*
* @since 2.0.5
* @since 4.0.0 Added the `$post` parameter.
*
* @param string $preview_link URL used for the post preview.
* @param WP_Post $post Post object.
*/
return apply_filters( 'preview_post_link', $preview_link, $post );
}
/**
* Retrieves the edit post link for post.
*
* Can be used within the WordPress loop or outside of it. Can be used with
* pages, posts, attachments, revisions, global styles, templates, and template parts.
*
* @since 2.3.0
* @since 6.3.0 Adds custom link for wp_navigation post types.
* Adds custom links for wp_template_part and wp_template post types.
*
* @param int|WP_Post $post Optional. Post ID or post object. Default is the global `$post`.
* @param string $context Optional. How to output the '&' character. Default '&'.
* @return string|null The edit post link for the given post. Null if the post type does not exist
* or does not allow an editing UI.
*/
function get_edit_post_link( $post = 0, $context = 'display' ) {
$post = get_post( $post );
if ( ! $post ) {
return;
}
if ( 'revision' === $post->post_type ) {
$action = '';
} elseif ( 'display' === $context ) {
$action = '&action=edit';
} else {
$action = '&action=edit';
}
$post_type_object = get_post_type_object( $post->post_type );
if ( ! $post_type_object ) {
return;
}
if ( ! current_user_can( 'edit_post', $post->ID ) ) {
return;
}
$link = '';
if ( 'wp_template' === $post->post_type || 'wp_template_part' === $post->post_type ) {
$slug = urlencode( get_stylesheet() . '//' . $post->post_name );
$link = admin_url( sprintf( $post_type_object->_edit_link, $post->post_type, $slug ) );
} elseif ( 'wp_navigation' === $post->post_type ) {
$link = admin_url( sprintf( $post_type_object->_edit_link, (string) $post->ID ) );
} elseif ( $post_type_object->_edit_link ) {
$link = admin_url( sprintf( $post_type_object->_edit_link . $action, $post->ID ) );
}
/**
* Filters the post edit link.
*
* @since 2.3.0
*
* @param string $link The edit link.
* @param int $post_id Post ID.
* @param string $context The link context. If set to 'display' then ampersands
* are encoded.
*/
return apply_filters( 'get_edit_post_link', $link, $post->ID, $context );
}
/**
* Displays the edit post link for post.
*
* @since 1.0.0
* @since 4.4.0 The `$css_class` argument was added.
*
* @param string $text Optional. Anchor text. If null, default is 'Edit This'. Default null.
* @param string $before Optional. Display before edit link. Default empty.
* @param string $after Optional. Display after edit link. Default empty.
* @param int|WP_Post $post Optional. Post ID or post object. Default is the global `$post`.
* @param string $css_class Optional. Add custom class to link. Default 'post-edit-link'.
*/
function edit_post_link( $text = null, $before = '', $after = '', $post = 0, $css_class = 'post-edit-link' ) {
$post = get_post( $post );
if ( ! $post ) {
return;
}
$url = get_edit_post_link( $post->ID );
if ( ! $url ) {
return;
}
if ( null === $text ) {
$text = __( 'Edit This' );
}
$link = '' . $text . '';
/**
* Filters the post edit link anchor tag.
*
* @since 2.3.0
*
* @param string $link Anchor tag for the edit link.
* @param int $post_id Post ID.
* @param string $text Anchor text.
*/
echo $before . apply_filters( 'edit_post_link', $link, $post->ID, $text ) . $after;
}
/**
* Retrieves the delete posts link for post.
*
* Can be used within the WordPress loop or outside of it, with any post type.
*
* @since 2.9.0
*
* @param int|WP_Post $post Optional. Post ID or post object. Default is the global `$post`.
* @param string $deprecated Not used.
* @param bool $force_delete Optional. Whether to bypass Trash and force deletion. Default false.
* @return string|void The delete post link URL for the given post.
*/
function get_delete_post_link( $post = 0, $deprecated = '', $force_delete = false ) {
if ( ! empty( $deprecated ) ) {
_deprecated_argument( __FUNCTION__, '3.0.0' );
}
$post = get_post( $post );
if ( ! $post ) {
return;
}
$post_type_object = get_post_type_object( $post->post_type );
if ( ! $post_type_object ) {
return;
}
if ( ! current_user_can( 'delete_post', $post->ID ) ) {
return;
}
$action = ( $force_delete || ! EMPTY_TRASH_DAYS ) ? 'delete' : 'trash';
$delete_link = add_query_arg( 'action', $action, admin_url( sprintf( $post_type_object->_edit_link, $post->ID ) ) );
/**
* Filters the post delete link.
*
* @since 2.9.0
*
* @param string $link The delete link.
* @param int $post_id Post ID.
* @param bool $force_delete Whether to bypass the Trash and force deletion. Default false.
*/
return apply_filters( 'get_delete_post_link', wp_nonce_url( $delete_link, "$action-post_{$post->ID}" ), $post->ID, $force_delete );
}
/**
* Retrieves the edit comment link.
*
* @since 2.3.0
*
* @param int|WP_Comment $comment_id Optional. Comment ID or WP_Comment object.
* @return string|void The edit comment link URL for the given comment.
*/
function get_edit_comment_link( $comment_id = 0 ) {
$comment = get_comment( $comment_id );
if ( ! current_user_can( 'edit_comment', $comment->comment_ID ) ) {
return;
}
$location = admin_url( 'comment.php?action=editcomment&c=' ) . $comment->comment_ID;
/**
* Filters the comment edit link.
*
* @since 2.3.0
*
* @param string $location The edit link.
*/
return apply_filters( 'get_edit_comment_link', $location );
}
/**
* Displays the edit comment link with formatting.
*
* @since 1.0.0
*
* @param string $text Optional. Anchor text. If null, default is 'Edit This'. Default null.
* @param string $before Optional. Display before edit link. Default empty.
* @param string $after Optional. Display after edit link. Default empty.
*/
function edit_comment_link( $text = null, $before = '', $after = '' ) {
$comment = get_comment();
if ( ! current_user_can( 'edit_comment', $comment->comment_ID ) ) {
return;
}
if ( null === $text ) {
$text = __( 'Edit This' );
}
$link = '' . $text . '';
/**
* Filters the comment edit link anchor tag.
*
* @since 2.3.0
*
* @param string $link Anchor tag for the edit link.
* @param string $comment_id Comment ID as a numeric string.
* @param string $text Anchor text.
*/
echo $before . apply_filters( 'edit_comment_link', $link, $comment->comment_ID, $text ) . $after;
}
/**
* Displays the edit bookmark link.
*
* @since 2.7.0
*
* @param int|stdClass $link Optional. Bookmark ID. Default is the ID of the current bookmark.
* @return string|void The edit bookmark link URL.
*/
function get_edit_bookmark_link( $link = 0 ) {
$link = get_bookmark( $link );
if ( ! current_user_can( 'manage_links' ) ) {
return;
}
$location = admin_url( 'link.php?action=edit&link_id=' ) . $link->link_id;
/**
* Filters the bookmark edit link.
*
* @since 2.7.0
*
* @param string $location The edit link.
* @param int $link_id Bookmark ID.
*/
return apply_filters( 'get_edit_bookmark_link', $location, $link->link_id );
}
/**
* Displays the edit bookmark link anchor content.
*
* @since 2.7.0
*
* @param string $link Optional. Anchor text. If empty, default is 'Edit This'. Default empty.
* @param string $before Optional. Display before edit link. Default empty.
* @param string $after Optional. Display after edit link. Default empty.
* @param int $bookmark Optional. Bookmark ID. Default is the current bookmark.
*/
function edit_bookmark_link( $link = '', $before = '', $after = '', $bookmark = null ) {
$bookmark = get_bookmark( $bookmark );
if ( ! current_user_can( 'manage_links' ) ) {
return;
}
if ( empty( $link ) ) {
$link = __( 'Edit This' );
}
$link = '' . $link . '';
/**
* Filters the bookmark edit link anchor tag.
*
* @since 2.7.0
*
* @param string $link Anchor tag for the edit link.
* @param int $link_id Bookmark ID.
*/
echo $before . apply_filters( 'edit_bookmark_link', $link, $bookmark->link_id ) . $after;
}
/**
* Retrieves the edit user link.
*
* @since 3.5.0
*
* @param int $user_id Optional. User ID. Defaults to the current user.
* @return string URL to edit user page or empty string.
*/
function get_edit_user_link( $user_id = null ) {
if ( ! $user_id ) {
$user_id = get_current_user_id();
}
if ( empty( $user_id ) || ! current_user_can( 'edit_user', $user_id ) ) {
return '';
}
$user = get_userdata( $user_id );
if ( ! $user ) {
return '';
}
if ( get_current_user_id() == $user->ID ) {
$link = get_edit_profile_url( $user->ID );
} else {
$link = add_query_arg( 'user_id', $user->ID, self_admin_url( 'user-edit.php' ) );
}
/**
* Filters the user edit link.
*
* @since 3.5.0
*
* @param string $link The edit link.
* @param int $user_id User ID.
*/
return apply_filters( 'get_edit_user_link', $link, $user->ID );
}
//
// Navigation links.
//
/**
* Retrieves the previous post that is adjacent to the current post.
*
* @since 1.5.0
*
* @param bool $in_same_term Optional. Whether post should be in the same taxonomy term.
* Default false.
* @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs.
* Default empty.
* @param string $taxonomy Optional. Taxonomy, if `$in_same_term` is true. Default 'category'.
* @return WP_Post|null|string Post object if successful. Null if global `$post` is not set.
* Empty string if no corresponding post exists.
*/
function get_previous_post( $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) {
return get_adjacent_post( $in_same_term, $excluded_terms, true, $taxonomy );
}
/**
* Retrieves the next post that is adjacent to the current post.
*
* @since 1.5.0
*
* @param bool $in_same_term Optional. Whether post should be in the same taxonomy term.
* Default false.
* @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs.
* Default empty.
* @param string $taxonomy Optional. Taxonomy, if `$in_same_term` is true. Default 'category'.
* @return WP_Post|null|string Post object if successful. Null if global `$post` is not set.
* Empty string if no corresponding post exists.
*/
function get_next_post( $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) {
return get_adjacent_post( $in_same_term, $excluded_terms, false, $taxonomy );
}
/**
* Retrieves the adjacent post.
*
* Can either be next or previous post.
*
* @since 2.5.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param bool $in_same_term Optional. Whether post should be in the same taxonomy term.
* Default false.
* @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs.
* Default empty string.
* @param bool $previous Optional. Whether to retrieve previous post.
* Default true.
* @param string $taxonomy Optional. Taxonomy, if `$in_same_term` is true. Default 'category'.
* @return WP_Post|null|string Post object if successful. Null if global `$post` is not set.
* Empty string if no corresponding post exists.
*/
function get_adjacent_post( $in_same_term = false, $excluded_terms = '', $previous = true, $taxonomy = 'category' ) {
global $wpdb;
$post = get_post();
if ( ! $post || ! taxonomy_exists( $taxonomy ) ) {
return null;
}
$current_post_date = $post->post_date;
$join = '';
$where = '';
$adjacent = $previous ? 'previous' : 'next';
if ( ! empty( $excluded_terms ) && ! is_array( $excluded_terms ) ) {
// Back-compat, $excluded_terms used to be $excluded_categories with IDs separated by " and ".
if ( str_contains( $excluded_terms, ' and ' ) ) {
_deprecated_argument(
__FUNCTION__,
'3.3.0',
sprintf(
/* translators: %s: The word 'and'. */
__( 'Use commas instead of %s to separate excluded terms.' ),
"'and'"
)
);
$excluded_terms = explode( ' and ', $excluded_terms );
} else {
$excluded_terms = explode( ',', $excluded_terms );
}
$excluded_terms = array_map( 'intval', $excluded_terms );
}
/**
* Filters the IDs of terms excluded from adjacent post queries.
*
* The dynamic portion of the hook name, `$adjacent`, refers to the type
* of adjacency, 'next' or 'previous'.
*
* Possible hook names include:
*
* - `get_next_post_excluded_terms`
* - `get_previous_post_excluded_terms`
*
* @since 4.4.0
*
* @param int[]|string $excluded_terms Array of excluded term IDs. Empty string if none were provided.
*/
$excluded_terms = apply_filters( "get_{$adjacent}_post_excluded_terms", $excluded_terms );
if ( $in_same_term || ! empty( $excluded_terms ) ) {
if ( $in_same_term ) {
$join .= " INNER JOIN $wpdb->term_relationships AS tr ON p.ID = tr.object_id INNER JOIN $wpdb->term_taxonomy AS tt ON tr.term_taxonomy_id = tt.term_taxonomy_id";
$where .= $wpdb->prepare( 'AND tt.taxonomy = %s', $taxonomy );
if ( ! is_object_in_taxonomy( $post->post_type, $taxonomy ) ) {
return '';
}
$term_array = wp_get_object_terms( $post->ID, $taxonomy, array( 'fields' => 'ids' ) );
// Remove any exclusions from the term array to include.
$term_array = array_diff( $term_array, (array) $excluded_terms );
$term_array = array_map( 'intval', $term_array );
if ( ! $term_array || is_wp_error( $term_array ) ) {
return '';
}
$where .= ' AND tt.term_id IN (' . implode( ',', $term_array ) . ')';
}
if ( ! empty( $excluded_terms ) ) {
$where .= " AND p.ID NOT IN ( SELECT tr.object_id FROM $wpdb->term_relationships tr LEFT JOIN $wpdb->term_taxonomy tt ON (tr.term_taxonomy_id = tt.term_taxonomy_id) WHERE tt.term_id IN (" . implode( ',', array_map( 'intval', $excluded_terms ) ) . ') )';
}
}
// 'post_status' clause depends on the current user.
if ( is_user_logged_in() ) {
$user_id = get_current_user_id();
$post_type_object = get_post_type_object( $post->post_type );
if ( empty( $post_type_object ) ) {
$post_type_cap = $post->post_type;
$read_private_cap = 'read_private_' . $post_type_cap . 's';
} else {
$read_private_cap = $post_type_object->cap->read_private_posts;
}
/*
* Results should include private posts belonging to the current user, or private posts where the
* current user has the 'read_private_posts' cap.
*/
$private_states = get_post_stati( array( 'private' => true ) );
$where .= " AND ( p.post_status = 'publish'";
foreach ( $private_states as $state ) {
if ( current_user_can( $read_private_cap ) ) {
$where .= $wpdb->prepare( ' OR p.post_status = %s', $state );
} else {
$where .= $wpdb->prepare( ' OR (p.post_author = %d AND p.post_status = %s)', $user_id, $state );
}
}
$where .= ' )';
} else {
$where .= " AND p.post_status = 'publish'";
}
$op = $previous ? '<' : '>';
$order = $previous ? 'DESC' : 'ASC';
/**
* Filters the JOIN clause in the SQL for an adjacent post query.
*
* The dynamic portion of the hook name, `$adjacent`, refers to the type
* of adjacency, 'next' or 'previous'.
*
* Possible hook names include:
*
* - `get_next_post_join`
* - `get_previous_post_join`
*
* @since 2.5.0
* @since 4.4.0 Added the `$taxonomy` and `$post` parameters.
*
* @param string $join The JOIN clause in the SQL.
* @param bool $in_same_term Whether post should be in the same taxonomy term.
* @param int[]|string $excluded_terms Array of excluded term IDs. Empty string if none were provided.
* @param string $taxonomy Taxonomy. Used to identify the term used when `$in_same_term` is true.
* @param WP_Post $post WP_Post object.
*/
$join = apply_filters( "get_{$adjacent}_post_join", $join, $in_same_term, $excluded_terms, $taxonomy, $post );
/**
* Filters the WHERE clause in the SQL for an adjacent post query.
*
* The dynamic portion of the hook name, `$adjacent`, refers to the type
* of adjacency, 'next' or 'previous'.
*
* Possible hook names include:
*
* - `get_next_post_where`
* - `get_previous_post_where`
*
* @since 2.5.0
* @since 4.4.0 Added the `$taxonomy` and `$post` parameters.
*
* @param string $where The `WHERE` clause in the SQL.
* @param bool $in_same_term Whether post should be in the same taxonomy term.
* @param int[]|string $excluded_terms Array of excluded term IDs. Empty string if none were provided.
* @param string $taxonomy Taxonomy. Used to identify the term used when `$in_same_term` is true.
* @param WP_Post $post WP_Post object.
*/
$where = apply_filters( "get_{$adjacent}_post_where", $wpdb->prepare( "WHERE p.post_date $op %s AND p.post_type = %s $where", $current_post_date, $post->post_type ), $in_same_term, $excluded_terms, $taxonomy, $post );
/**
* Filters the ORDER BY clause in the SQL for an adjacent post query.
*
* The dynamic portion of the hook name, `$adjacent`, refers to the type
* of adjacency, 'next' or 'previous'.
*
* Possible hook names include:
*
* - `get_next_post_sort`
* - `get_previous_post_sort`
*
* @since 2.5.0
* @since 4.4.0 Added the `$post` parameter.
* @since 4.9.0 Added the `$order` parameter.
*
* @param string $order_by The `ORDER BY` clause in the SQL.
* @param WP_Post $post WP_Post object.
* @param string $order Sort order. 'DESC' for previous post, 'ASC' for next.
*/
$sort = apply_filters( "get_{$adjacent}_post_sort", "ORDER BY p.post_date $order LIMIT 1", $post, $order );
$query = "SELECT p.ID FROM $wpdb->posts AS p $join $where $sort";
$key = md5( $query );
$last_changed = wp_cache_get_last_changed( 'posts' );
if ( $in_same_term || ! empty( $excluded_terms ) ) {
$last_changed .= wp_cache_get_last_changed( 'terms' );
}
$cache_key = "adjacent_post:$key:$last_changed";
$result = wp_cache_get( $cache_key, 'post-queries' );
if ( false !== $result ) {
if ( $result ) {
$result = get_post( $result );
}
return $result;
}
$result = $wpdb->get_var( $query );
if ( null === $result ) {
$result = '';
}
wp_cache_set( $cache_key, $result, 'post-queries' );
if ( $result ) {
$result = get_post( $result );
}
return $result;
}
/**
* Retrieves the adjacent post relational link.
*
* Can either be next or previous post relational link.
*
* @since 2.8.0
*
* @param string $title Optional. Link title format. Default '%title'.
* @param bool $in_same_term Optional. Whether link should be in the same taxonomy term.
* Default false.
* @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs.
* Default empty.
* @param bool $previous Optional. Whether to display link to previous or next post.
* Default true.
* @param string $taxonomy Optional. Taxonomy, if `$in_same_term` is true. Default 'category'.
* @return string|void The adjacent post relational link URL.
*/
function get_adjacent_post_rel_link( $title = '%title', $in_same_term = false, $excluded_terms = '', $previous = true, $taxonomy = 'category' ) {
$post = get_post();
if ( $previous && is_attachment() && $post ) {
$post = get_post( $post->post_parent );
} else {
$post = get_adjacent_post( $in_same_term, $excluded_terms, $previous, $taxonomy );
}
if ( empty( $post ) ) {
return;
}
$post_title = the_title_attribute(
array(
'echo' => false,
'post' => $post,
)
);
if ( empty( $post_title ) ) {
$post_title = $previous ? __( 'Previous Post' ) : __( 'Next Post' );
}
$date = mysql2date( get_option( 'date_format' ), $post->post_date );
$title = str_replace( '%title', $post_title, $title );
$title = str_replace( '%date', $date, $title );
$link = $previous ? "\n";
$adjacent = $previous ? 'previous' : 'next';
/**
* Filters the adjacent post relational link.
*
* The dynamic portion of the hook name, `$adjacent`, refers to the type
* of adjacency, 'next' or 'previous'.
*
* Possible hook names include:
*
* - `next_post_rel_link`
* - `previous_post_rel_link`
*
* @since 2.8.0
*
* @param string $link The relational link.
*/
return apply_filters( "{$adjacent}_post_rel_link", $link );
}
/**
* Displays the relational links for the posts adjacent to the current post.
*
* @since 2.8.0
*
* @param string $title Optional. Link title format. Default '%title'.
* @param bool $in_same_term Optional. Whether link should be in the same taxonomy term.
* Default false.
* @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs.
* Default empty.
* @param string $taxonomy Optional. Taxonomy, if `$in_same_term` is true. Default 'category'.
*/
function adjacent_posts_rel_link( $title = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) {
echo get_adjacent_post_rel_link( $title, $in_same_term, $excluded_terms, true, $taxonomy );
echo get_adjacent_post_rel_link( $title, $in_same_term, $excluded_terms, false, $taxonomy );
}
/**
* Displays relational links for the posts adjacent to the current post for single post pages.
*
* This is meant to be attached to actions like 'wp_head'. Do not call this directly in plugins
* or theme templates.
*
* @since 3.0.0
* @since 5.6.0 No longer used in core.
*
* @see adjacent_posts_rel_link()
*/
function adjacent_posts_rel_link_wp_head() {
if ( ! is_single() || is_attachment() ) {
return;
}
adjacent_posts_rel_link();
}
/**
* Displays the relational link for the next post adjacent to the current post.
*
* @since 2.8.0
*
* @see get_adjacent_post_rel_link()
*
* @param string $title Optional. Link title format. Default '%title'.
* @param bool $in_same_term Optional. Whether link should be in the same taxonomy term.
* Default false.
* @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs.
* Default empty.
* @param string $taxonomy Optional. Taxonomy, if `$in_same_term` is true. Default 'category'.
*/
function next_post_rel_link( $title = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) {
echo get_adjacent_post_rel_link( $title, $in_same_term, $excluded_terms, false, $taxonomy );
}
/**
* Displays the relational link for the previous post adjacent to the current post.
*
* @since 2.8.0
*
* @see get_adjacent_post_rel_link()
*
* @param string $title Optional. Link title format. Default '%title'.
* @param bool $in_same_term Optional. Whether link should be in the same taxonomy term.
* Default false.
* @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs.
* Default true.
* @param string $taxonomy Optional. Taxonomy, if `$in_same_term` is true. Default 'category'.
*/
function prev_post_rel_link( $title = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) {
echo get_adjacent_post_rel_link( $title, $in_same_term, $excluded_terms, true, $taxonomy );
}
/**
* Retrieves the boundary post.
*
* Boundary being either the first or last post by publish date within the constraints specified
* by `$in_same_term` or `$excluded_terms`.
*
* @since 2.8.0
*
* @param bool $in_same_term Optional. Whether returned post should be in the same taxonomy term.
* Default false.
* @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs.
* Default empty.
* @param bool $start Optional. Whether to retrieve first or last post.
* Default true.
* @param string $taxonomy Optional. Taxonomy, if `$in_same_term` is true. Default 'category'.
* @return array|null Array containing the boundary post object if successful, null otherwise.
*/
function get_boundary_post( $in_same_term = false, $excluded_terms = '', $start = true, $taxonomy = 'category' ) {
$post = get_post();
if ( ! $post || ! is_single() || is_attachment() || ! taxonomy_exists( $taxonomy ) ) {
return null;
}
$query_args = array(
'posts_per_page' => 1,
'order' => $start ? 'ASC' : 'DESC',
'update_post_term_cache' => false,
'update_post_meta_cache' => false,
);
$term_array = array();
if ( ! is_array( $excluded_terms ) ) {
if ( ! empty( $excluded_terms ) ) {
$excluded_terms = explode( ',', $excluded_terms );
} else {
$excluded_terms = array();
}
}
if ( $in_same_term || ! empty( $excluded_terms ) ) {
if ( $in_same_term ) {
$term_array = wp_get_object_terms( $post->ID, $taxonomy, array( 'fields' => 'ids' ) );
}
if ( ! empty( $excluded_terms ) ) {
$excluded_terms = array_map( 'intval', $excluded_terms );
$excluded_terms = array_diff( $excluded_terms, $term_array );
$inverse_terms = array();
foreach ( $excluded_terms as $excluded_term ) {
$inverse_terms[] = $excluded_term * -1;
}
$excluded_terms = $inverse_terms;
}
$query_args['tax_query'] = array(
array(
'taxonomy' => $taxonomy,
'terms' => array_merge( $term_array, $excluded_terms ),
),
);
}
return get_posts( $query_args );
}
/**
* Retrieves the previous post link that is adjacent to the current post.
*
* @since 3.7.0
*
* @param string $format Optional. Link anchor format. Default '« %link'.
* @param string $link Optional. Link permalink format. Default '%title'.
* @param bool $in_same_term Optional. Whether link should be in the same taxonomy term.
* Default false.
* @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs.
* Default empty.
* @param string $taxonomy Optional. Taxonomy, if `$in_same_term` is true. Default 'category'.
* @return string The link URL of the previous post in relation to the current post.
*/
function get_previous_post_link( $format = '« %link', $link = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) {
return get_adjacent_post_link( $format, $link, $in_same_term, $excluded_terms, true, $taxonomy );
}
/**
* Displays the previous post link that is adjacent to the current post.
*
* @since 1.5.0
*
* @see get_previous_post_link()
*
* @param string $format Optional. Link anchor format. Default '« %link'.
* @param string $link Optional. Link permalink format. Default '%title'.
* @param bool $in_same_term Optional. Whether link should be in the same taxonomy term.
* Default false.
* @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs.
* Default empty.
* @param string $taxonomy Optional. Taxonomy, if `$in_same_term` is true. Default 'category'.
*/
function previous_post_link( $format = '« %link', $link = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) {
echo get_previous_post_link( $format, $link, $in_same_term, $excluded_terms, $taxonomy );
}
/**
* Retrieves the next post link that is adjacent to the current post.
*
* @since 3.7.0
*
* @param string $format Optional. Link anchor format. Default '« %link'.
* @param string $link Optional. Link permalink format. Default '%title'.
* @param bool $in_same_term Optional. Whether link should be in the same taxonomy term.
* Default false.
* @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs.
* Default empty.
* @param string $taxonomy Optional. Taxonomy, if `$in_same_term` is true. Default 'category'.
* @return string The link URL of the next post in relation to the current post.
*/
function get_next_post_link( $format = '%link »', $link = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) {
return get_adjacent_post_link( $format, $link, $in_same_term, $excluded_terms, false, $taxonomy );
}
/**
* Displays the next post link that is adjacent to the current post.
*
* @since 1.5.0
*
* @see get_next_post_link()
*
* @param string $format Optional. Link anchor format. Default '« %link'.
* @param string $link Optional. Link permalink format. Default '%title'.
* @param bool $in_same_term Optional. Whether link should be in the same taxonomy term.
* Default false.
* @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs.
* Default empty.
* @param string $taxonomy Optional. Taxonomy, if `$in_same_term` is true. Default 'category'.
*/
function next_post_link( $format = '%link »', $link = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) {
echo get_next_post_link( $format, $link, $in_same_term, $excluded_terms, $taxonomy );
}
/**
* Retrieves the adjacent post link.
*
* Can be either next post link or previous.
*
* @since 3.7.0
*
* @param string $format Link anchor format.
* @param string $link Link permalink format.
* @param bool $in_same_term Optional. Whether link should be in the same taxonomy term.
* Default false.
* @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded terms IDs.
* Default empty.
* @param bool $previous Optional. Whether to display link to previous or next post.
* Default true.
* @param string $taxonomy Optional. Taxonomy, if `$in_same_term` is true. Default 'category'.
* @return string The link URL of the previous or next post in relation to the current post.
*/
function get_adjacent_post_link( $format, $link, $in_same_term = false, $excluded_terms = '', $previous = true, $taxonomy = 'category' ) {
if ( $previous && is_attachment() ) {
$post = get_post( get_post()->post_parent );
} else {
$post = get_adjacent_post( $in_same_term, $excluded_terms, $previous, $taxonomy );
}
if ( ! $post ) {
$output = '';
} else {
$title = $post->post_title;
if ( empty( $post->post_title ) ) {
$title = $previous ? __( 'Previous Post' ) : __( 'Next Post' );
}
/** This filter is documented in wp-includes/post-template.php */
$title = apply_filters( 'the_title', $title, $post->ID );
$date = mysql2date( get_option( 'date_format' ), $post->post_date );
$rel = $previous ? 'prev' : 'next';
$string = '';
$inlink = str_replace( '%title', $title, $link );
$inlink = str_replace( '%date', $date, $inlink );
$inlink = $string . $inlink . '';
$output = str_replace( '%link', $inlink, $format );
}
$adjacent = $previous ? 'previous' : 'next';
/**
* Filters the adjacent post link.
*
* The dynamic portion of the hook name, `$adjacent`, refers to the type
* of adjacency, 'next' or 'previous'.
*
* Possible hook names include:
*
* - `next_post_link`
* - `previous_post_link`
*
* @since 2.6.0
* @since 4.2.0 Added the `$adjacent` parameter.
*
* @param string $output The adjacent post link.
* @param string $format Link anchor format.
* @param string $link Link permalink format.
* @param WP_Post|string $post The adjacent post. Empty string if no corresponding post exists.
* @param string $adjacent Whether the post is previous or next.
*/
return apply_filters( "{$adjacent}_post_link", $output, $format, $link, $post, $adjacent );
}
/**
* Displays the adjacent post link.
*
* Can be either next post link or previous.
*
* @since 2.5.0
*
* @param string $format Link anchor format.
* @param string $link Link permalink format.
* @param bool $in_same_term Optional. Whether link should be in the same taxonomy term.
* Default false.
* @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded category IDs.
* Default empty.
* @param bool $previous Optional. Whether to display link to previous or next post.
* Default true.
* @param string $taxonomy Optional. Taxonomy, if `$in_same_term` is true. Default 'category'.
*/
function adjacent_post_link( $format, $link, $in_same_term = false, $excluded_terms = '', $previous = true, $taxonomy = 'category' ) {
echo get_adjacent_post_link( $format, $link, $in_same_term, $excluded_terms, $previous, $taxonomy );
}
/**
* Retrieves the link for a page number.
*
* @since 1.5.0
*
* @global WP_Rewrite $wp_rewrite WordPress rewrite component.
*
* @param int $pagenum Optional. Page number. Default 1.
* @param bool $escape Optional. Whether to escape the URL for display, with esc_url().
* If set to false, prepares the URL with sanitize_url(). Default true.
* @return string The link URL for the given page number.
*/
function get_pagenum_link( $pagenum = 1, $escape = true ) {
global $wp_rewrite;
$pagenum = (int) $pagenum;
$request = remove_query_arg( 'paged' );
$home_root = parse_url( home_url() );
$home_root = ( isset( $home_root['path'] ) ) ? $home_root['path'] : '';
$home_root = preg_quote( $home_root, '|' );
$request = preg_replace( '|^' . $home_root . '|i', '', $request );
$request = preg_replace( '|^/+|', '', $request );
if ( ! $wp_rewrite->using_permalinks() || is_admin() ) {
$base = trailingslashit( get_bloginfo( 'url' ) );
if ( $pagenum > 1 ) {
$result = add_query_arg( 'paged', $pagenum, $base . $request );
} else {
$result = $base . $request;
}
} else {
$qs_regex = '|\?.*?$|';
preg_match( $qs_regex, $request, $qs_match );
$parts = array();
$parts[] = untrailingslashit( get_bloginfo( 'url' ) );
if ( ! empty( $qs_match[0] ) ) {
$query_string = $qs_match[0];
$request = preg_replace( $qs_regex, '', $request );
} else {
$query_string = '';
}
$request = preg_replace( "|$wp_rewrite->pagination_base/\d+/?$|", '', $request );
$request = preg_replace( '|^' . preg_quote( $wp_rewrite->index, '|' ) . '|i', '', $request );
$request = ltrim( $request, '/' );
if ( $wp_rewrite->using_index_permalinks() && ( $pagenum > 1 || '' !== $request ) ) {
$parts[] = $wp_rewrite->index;
}
$parts[] = untrailingslashit( $request );
if ( $pagenum > 1 ) {
$parts[] = $wp_rewrite->pagination_base;
$parts[] = $pagenum;
}
$result = user_trailingslashit( implode( '/', array_filter( $parts ) ), 'paged' );
if ( ! empty( $query_string ) ) {
$result .= $query_string;
}
}
/**
* Filters the page number link for the current request.
*
* @since 2.5.0
* @since 5.2.0 Added the `$pagenum` argument.
*
* @param string $result The page number link.
* @param int $pagenum The page number.
*/
$result = apply_filters( 'get_pagenum_link', $result, $pagenum );
if ( $escape ) {
return esc_url( $result );
} else {
return sanitize_url( $result );
}
}
/**
* Retrieves the next posts page link.
*
* Backported from 2.1.3 to 2.0.10.
*
* @since 2.0.10
*
* @global int $paged
*
* @param int $max_page Optional. Max pages. Default 0.
* @return string|void The link URL for next posts page.
*/
function get_next_posts_page_link( $max_page = 0 ) {
global $paged;
if ( ! is_single() ) {
if ( ! $paged ) {
$paged = 1;
}
$next_page = (int) $paged + 1;
if ( ! $max_page || $max_page >= $next_page ) {
return get_pagenum_link( $next_page );
}
}
}
/**
* Displays or retrieves the next posts page link.
*
* @since 0.71
*
* @param int $max_page Optional. Max pages. Default 0.
* @param bool $display Optional. Whether to echo the link. Default true.
* @return string|void The link URL for next posts page if `$display = false`.
*/
function next_posts( $max_page = 0, $display = true ) {
$link = get_next_posts_page_link( $max_page );
$output = $link ? esc_url( $link ) : '';
if ( $display ) {
echo $output;
} else {
return $output;
}
}
/**
* Retrieves the next posts page link.
*
* @since 2.7.0
*
* @global int $paged
* @global WP_Query $wp_query WordPress Query object.
*
* @param string $label Content for link text.
* @param int $max_page Optional. Max pages. Default 0.
* @return string|void HTML-formatted next posts page link.
*/
function get_next_posts_link( $label = null, $max_page = 0 ) {
global $paged, $wp_query;
if ( ! $max_page ) {
$max_page = $wp_query->max_num_pages;
}
if ( ! $paged ) {
$paged = 1;
}
$next_page = (int) $paged + 1;
if ( null === $label ) {
$label = __( 'Next Page »' );
}
if ( ! is_single() && ( $next_page <= $max_page ) ) {
/**
* Filters the anchor tag attributes for the next posts page link.
*
* @since 2.7.0
*
* @param string $attributes Attributes for the anchor tag.
*/
$attr = apply_filters( 'next_posts_link_attributes', '' );
return sprintf(
'%3$s',
next_posts( $max_page, false ),
$attr,
preg_replace( '/&([^#])(?![a-z]{1,8};)/i', '&$1', $label )
);
}
}
/**
* Displays the next posts page link.
*
* @since 0.71
*
* @param string $label Content for link text.
* @param int $max_page Optional. Max pages. Default 0.
*/
function next_posts_link( $label = null, $max_page = 0 ) {
echo get_next_posts_link( $label, $max_page );
}
/**
* Retrieves the previous posts page link.
*
* Will only return string, if not on a single page or post.
*
* Backported to 2.0.10 from 2.1.3.
*
* @since 2.0.10
*
* @global int $paged
*
* @return string|void The link for the previous posts page.
*/
function get_previous_posts_page_link() {
global $paged;
if ( ! is_single() ) {
$previous_page = (int) $paged - 1;
if ( $previous_page < 1 ) {
$previous_page = 1;
}
return get_pagenum_link( $previous_page );
}
}
/**
* Displays or retrieves the previous posts page link.
*
* @since 0.71
*
* @param bool $display Optional. Whether to echo the link. Default true.
* @return string|void The previous posts page link if `$display = false`.
*/
function previous_posts( $display = true ) {
$output = esc_url( get_previous_posts_page_link() );
if ( $display ) {
echo $output;
} else {
return $output;
}
}
/**
* Retrieves the previous posts page link.
*
* @since 2.7.0
*
* @global int $paged
*
* @param string $label Optional. Previous page link text.
* @return string|void HTML-formatted previous page link.
*/
function get_previous_posts_link( $label = null ) {
global $paged;
if ( null === $label ) {
$label = __( '« Previous Page' );
}
if ( ! is_single() && $paged > 1 ) {
/**
* Filters the anchor tag attributes for the previous posts page link.
*
* @since 2.7.0
*
* @param string $attributes Attributes for the anchor tag.
*/
$attr = apply_filters( 'previous_posts_link_attributes', '' );
return sprintf(
'%3$s',
previous_posts( false ),
$attr,
preg_replace( '/&([^#])(?![a-z]{1,8};)/i', '&$1', $label )
);
}
}
/**
* Displays the previous posts page link.
*
* @since 0.71
*
* @param string $label Optional. Previous page link text.
*/
function previous_posts_link( $label = null ) {
echo get_previous_posts_link( $label );
}
/**
* Retrieves the post pages link navigation for previous and next pages.
*
* @since 2.8.0
*
* @global WP_Query $wp_query WordPress Query object.
*
* @param string|array $args {
* Optional. Arguments to build the post pages link navigation.
*
* @type string $sep Separator character. Default '—'.
* @type string $prelabel Link text to display for the previous page link.
* Default '« Previous Page'.
* @type string $nxtlabel Link text to display for the next page link.
* Default 'Next Page »'.
* }
* @return string The posts link navigation.
*/
function get_posts_nav_link( $args = array() ) {
global $wp_query;
$return = '';
if ( ! is_singular() ) {
$defaults = array(
'sep' => ' — ',
'prelabel' => __( '« Previous Page' ),
'nxtlabel' => __( 'Next Page »' ),
);
$args = wp_parse_args( $args, $defaults );
$max_num_pages = $wp_query->max_num_pages;
$paged = get_query_var( 'paged' );
// Only have sep if there's both prev and next results.
if ( $paged < 2 || $paged >= $max_num_pages ) {
$args['sep'] = '';
}
if ( $max_num_pages > 1 ) {
$return = get_previous_posts_link( $args['prelabel'] );
$return .= preg_replace( '/&([^#])(?![a-z]{1,8};)/i', '&$1', $args['sep'] );
$return .= get_next_posts_link( $args['nxtlabel'] );
}
}
return $return;
}
/**
* Displays the post pages link navigation for previous and next pages.
*
* @since 0.71
*
* @param string $sep Optional. Separator for posts navigation links. Default empty.
* @param string $prelabel Optional. Label for previous pages. Default empty.
* @param string $nxtlabel Optional Label for next pages. Default empty.
*/
function posts_nav_link( $sep = '', $prelabel = '', $nxtlabel = '' ) {
$args = array_filter( compact( 'sep', 'prelabel', 'nxtlabel' ) );
echo get_posts_nav_link( $args );
}
/**
* Retrieves the navigation to next/previous post, when applicable.
*
* @since 4.1.0
* @since 4.4.0 Introduced the `in_same_term`, `excluded_terms`, and `taxonomy` arguments.
* @since 5.3.0 Added the `aria_label` parameter.
* @since 5.5.0 Added the `class` parameter.
*
* @param array $args {
* Optional. Default post navigation arguments. Default empty array.
*
* @type string $prev_text Anchor text to display in the previous post link.
* Default '%title'.
* @type string $next_text Anchor text to display in the next post link.
* Default '%title'.
* @type bool $in_same_term Whether link should be in the same taxonomy term.
* Default false.
* @type int[]|string $excluded_terms Array or comma-separated list of excluded term IDs.
* Default empty.
* @type string $taxonomy Taxonomy, if `$in_same_term` is true. Default 'category'.
* @type string $screen_reader_text Screen reader text for the nav element.
* Default 'Post navigation'.
* @type string $aria_label ARIA label text for the nav element. Default 'Posts'.
* @type string $class Custom class for the nav element. Default 'post-navigation'.
* }
* @return string Markup for post links.
*/
function get_the_post_navigation( $args = array() ) {
// Make sure the nav element has an aria-label attribute: fallback to the screen reader text.
if ( ! empty( $args['screen_reader_text'] ) && empty( $args['aria_label'] ) ) {
$args['aria_label'] = $args['screen_reader_text'];
}
$args = wp_parse_args(
$args,
array(
'prev_text' => '%title',
'next_text' => '%title',
'in_same_term' => false,
'excluded_terms' => '',
'taxonomy' => 'category',
'screen_reader_text' => __( 'Post navigation' ),
'aria_label' => __( 'Posts' ),
'class' => 'post-navigation',
)
);
$navigation = '';
$previous = get_previous_post_link(
'