Edit file File name : taxonomy.php Content :<?php /** * WordPress Taxonomy Administration API. * * @package WordPress * @subpackage Administration */ // // Category. // /** * Checks whether a category exists. * * @since 2.0.0 * * @see term_exists() * * @param int|string $cat_name Category name. * @param int $category_parent Optional. ID of parent category. * @return string|null Returns the category ID as a numeric string if the pairing exists, null if not. */ function category_exists( $cat_name, $category_parent = null ) { $id = term_exists( $cat_name, 'category', $category_parent ); if ( is_array( $id ) ) { $id = $id['term_id']; } return $id; } /** * Gets category object for given ID and 'edit' filter context. * * @since 2.0.0 * * @param int $id * @return object */ function get_category_to_edit( $id ) { $category = get_term( $id, 'category', OBJECT, 'edit' ); _make_cat_compat( $category ); return $category; } /** * Adds a new category to the database if it does not already exist. * * @since 2.0.0 * * @param int|string $cat_name Category name. * @param int $category_parent Optional. ID of parent category. * @return int|WP_Error */ function wp_create_category( $cat_name, $category_parent = 0 ) { $id = category_exists( $cat_name, $category_parent ); if ( $id ) { return $id; } return wp_insert_category( array( 'cat_name' => $cat_name, 'category_parent' => $category_parent, ) ); } /** * Creates categories for the given post. * * @since 2.0.0 * * @param string[] $categories Array of category names to create. * @param int $post_id Optional. The post ID. Default empty. * @return int[] Array of IDs of categories assigned to the given post. */ function wp_create_categories( $categories, $post_id = '' ) { $cat_ids = array(); foreach ( $categories as $category ) { $id = category_exists( $category ); if ( $id ) { $cat_ids[] = $id; } else { $id = wp_create_category( $category ); if ( $id ) { $cat_ids[] = $id; } } } if ( $post_id ) { wp_set_post_categories( $post_id, $cat_ids ); } return $cat_ids; } /** * Updates an existing Category or creates a new Category. * * @since 2.0.0 * @since 2.5.0 $wp_error parameter was added. * @since 3.0.0 The 'taxonomy' argument was added. * * @param array $catarr { * Array of arguments for inserting a new category. * * @type int $cat_ID Category ID. A non-zero value updates an existing category. * Default 0. * @type string $taxonomy Taxonomy slug. Default 'category'. * @type string $cat_name Category name. Default empty. * @type string $category_description Category description. Default empty. * @type string $category_nicename Category nice (display) name. Default empty. * @type int|string $category_parent Category parent ID. Default empty. * } * @param bool $wp_error Optional. Default false. * @return int|WP_Error The ID number of the new or updated Category on success. Zero or a WP_Error on failure, * depending on param `$wp_error`. */ function wp_insert_category( $catarr, $wp_error = false ) { $cat_defaults = array( 'cat_ID' => 0, 'taxonomy' => 'category', 'cat_name' => '', 'category_description' => '', 'category_nicename' => '', 'category_parent' => '', ); $catarr = wp_parse_args( $catarr, $cat_defaults ); if ( '' === trim( $catarr['cat_name'] ) ) { if ( ! $wp_error ) { return 0; } else { return new WP_Error( 'cat_name', __( 'You did not enter a category name.' ) ); } } $catarr['cat_ID'] = (int) $catarr['cat_ID']; // Are we updating or creating? $update = ! empty( $catarr['cat_ID'] ); $name = $catarr['cat_name']; $description = $catarr['category_description']; $slug = $catarr['category_nicename']; $parent = (int) $catarr['category_parent']; if ( $parent < 0 ) { $parent = 0; } if ( empty( $parent ) || ! term_exists( $parent, $catarr['taxonomy'] ) || ( $catarr['cat_ID'] && term_is_ancestor_of( $catarr['cat_ID'], $parent, $catarr['taxonomy'] ) ) ) { $parent = 0; } $args = compact( 'name', 'slug', 'parent', 'description' ); if ( $update ) { $catarr['cat_ID'] = wp_update_term( $catarr['cat_ID'], $catarr['taxonomy'], $args ); } else { $catarr['cat_ID'] = wp_insert_term( $catarr['cat_name'], $catarr['taxonomy'], $args ); } if ( is_wp_error( $catarr['cat_ID'] ) ) { if ( $wp_error ) { return $catarr['cat_ID']; } else { return 0; } } return $catarr['cat_ID']['term_id']; } /** * Aliases wp_insert_category() with minimal args. * * If you want to update only some fields of an existing category, call this * function with only the new values set inside $catarr. * * @since 2.0.0 * * @param array $catarr The 'cat_ID' value is required. All other keys are optional. * @return int|false The ID number of the new or updated Category on success. Zero or FALSE on failure. */ function wp_update_category( $catarr ) { $cat_id = (int) $catarr['cat_ID']; if ( isset( $catarr['category_parent'] ) && ( $cat_id === (int) $catarr['category_parent'] ) ) { return false; } // First, get all of the original fields. $category = get_term( $cat_id, 'category', ARRAY_A ); _make_cat_compat( $category ); // Escape data pulled from DB. $category = wp_slash( $category ); // Merge old and new fields with new fields overwriting old ones. $catarr = array_merge( $category, $catarr ); return wp_insert_category( $catarr ); } // // Tags. // /** * Checks whether a post tag with a given name exists. * * @since 2.3.0 * * @param int|string $tag_name * @return mixed Returns null if the term does not exist. * Returns an array of the term ID and the term taxonomy ID if the pairing exists. * Returns 0 if term ID 0 is passed to the function. */ function tag_exists( $tag_name ) { return term_exists( $tag_name, 'post_tag' ); } /** * Adds a new tag to the database if it does not already exist. * * @since 2.3.0 * * @param int|string $tag_name * @return array|WP_Error */ function wp_create_tag( $tag_name ) { return wp_create_term( $tag_name, 'post_tag' ); } /** * Gets comma-separated list of tags available to edit. * * @since 2.3.0 * * @param int $post_id * @param string $taxonomy Optional. The taxonomy for which to retrieve terms. Default 'post_tag'. * @return string|false|WP_Error */ function get_tags_to_edit( $post_id, $taxonomy = 'post_tag' ) { return get_terms_to_edit( $post_id, $taxonomy ); } /** * Gets comma-separated list of terms available to edit for the given post ID. * * @since 2.8.0 * * @param int $post_id * @param string $taxonomy Optional. The taxonomy for which to retrieve terms. Default 'post_tag'. * @return string|false|WP_Error */ function get_terms_to_edit( $post_id, $taxonomy = 'post_tag' ) { $post_id = (int) $post_id; if ( ! $post_id ) { return false; } $terms = get_object_term_cache( $post_id, $taxonomy ); if ( false === $terms ) { $terms = wp_get_object_terms( $post_id, $taxonomy ); wp_cache_add( $post_id, wp_list_pluck( $terms, 'term_id' ), $taxonomy . '_relationships' ); } if ( ! $terms ) { return false; } if ( is_wp_error( $terms ) ) { return $terms; } $term_names = array(); foreach ( $terms as $term ) { $term_names[] = $term->name; } $terms_to_edit = esc_attr( implode( ',', $term_names ) ); /** * Filters the comma-separated list of terms available to edit. * * @since 2.8.0 * * @see get_terms_to_edit() * * @param string $terms_to_edit A comma-separated list of term names. * @param string $taxonomy The taxonomy name for which to retrieve terms. */ $terms_to_edit = apply_filters( 'terms_to_edit', $terms_to_edit, $taxonomy ); return $terms_to_edit; } /** * Adds a new term to the database if it does not already exist. * * @since 2.8.0 * * @param string $tag_name The term name. * @param string $taxonomy Optional. The taxonomy within which to create the term. Default 'post_tag'. * @return array|WP_Error */ function wp_create_term( $tag_name, $taxonomy = 'post_tag' ) { $id = term_exists( $tag_name, $taxonomy ); if ( $id ) { return $id; } return wp_insert_term( $tag_name, $taxonomy ); } Save