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Taxonomy API: Core category-specific functionality
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| get_categories( $args = '' ) X-Ref |
| Retrieves a list of category objects. If you set the 'taxonomy' argument to 'link_category', the link categories will be returned instead. param: string|array $args { return: array List of category objects. since: 2.1.0 |
| get_category( $category, $output = OBJECT, $filter = 'raw' ) X-Ref |
| Retrieves category data given a category ID or category object. If you pass the $category parameter an object, which is assumed to be the category row object retrieved the database. It will cache the category data. If you pass $category an integer of the category ID, then that category will be retrieved from the database, if it isn't already cached, and pass it back. If you look at get_term(), then both types will be passed through several filters and finally sanitized based on the $filter parameter value. param: int|object $category Category ID or category row object. param: string $output Optional. The required return type. One of OBJECT, ARRAY_A, or ARRAY_N, which param: string $filter Optional. How to sanitize category fields. Default 'raw'. return: object|array|WP_Error|null Category data in type defined by $output parameter. since: 1.5.1 |
| get_category_by_path( $category_path, $full_match = true, $output = OBJECT ) X-Ref |
| Retrieves a category based on URL containing the category slug. Breaks the $category_path parameter up to get the category slug. Tries to find the child path and will return it. If it doesn't find a match, then it will return the first category matching slug, if $full_match, is set to false. If it does not, then it will return null. It is also possible that it will return a WP_Error object on failure. Check for it when using this function. param: string $category_path URL containing category slugs. param: bool $full_match Optional. Whether full path should be matched. param: string $output Optional. The required return type. One of OBJECT, ARRAY_A, or ARRAY_N, which return: WP_Term|array|WP_Error|null Type is based on $output value. since: 2.1.0 |
| get_category_by_slug( $slug ) X-Ref |
| Retrieves a category object by category slug. param: string $slug The category slug. return: object|false Category data object on success, false if not found. since: 2.3.0 |
| get_cat_ID( $cat_name ) X-Ref |
| Retrieves the ID of a category from its name. param: string $cat_name Category name. return: int Category ID on success, 0 if the category doesn't exist. since: 1.0.0 |
| get_cat_name( $cat_id ) X-Ref |
| Retrieves the name of a category from its ID. param: int $cat_id Category ID. return: string Category name, or an empty string if the category doesn't exist. since: 1.0.0 |
| cat_is_ancestor_of( $cat1, $cat2 ) X-Ref |
| Checks if a category is an ancestor of another category. You can use either an ID or the category object for both parameters. If you use an integer, the category will be retrieved. param: int|object $cat1 ID or object to check if this is the parent category. param: int|object $cat2 The child category. return: bool Whether $cat2 is child of $cat1. since: 2.1.0 |
| sanitize_category( $category, $context = 'display' ) X-Ref |
| Sanitizes category data based on context. param: object|array $category Category data. param: string $context Optional. Default 'display'. return: object|array Same type as $category with sanitized data for safe use. since: 2.3.0 |
| sanitize_category_field( $field, $value, $cat_id, $context ) X-Ref |
| Sanitizes data in single category key field. param: string $field Category key to sanitize. param: mixed $value Category value to sanitize. param: int $cat_id Category ID. param: string $context What filter to use, 'raw', 'display', etc. return: mixed Same type as $value after $value has been sanitized. since: 2.3.0 |
| get_tags( $args = '' ) X-Ref |
| Retrieves all post tags. param: string|array $args { return: WP_Term[]|int|WP_Error Array of 'post_tag' term objects, a count thereof, since: 2.3.0 |
| get_tag( $tag, $output = OBJECT, $filter = 'raw' ) X-Ref |
| Retrieves a post tag by tag ID or tag object. If you pass the $tag parameter an object, which is assumed to be the tag row object retrieved from the database, it will cache the tag data. If you pass $tag an integer of the tag ID, then that tag will be retrieved from the database, if it isn't already cached, and passed back. If you look at get_term(), both types will be passed through several filters and finally sanitized based on the $filter parameter value. param: int|WP_Term|object $tag A tag ID or object. param: string $output Optional. The required return type. One of OBJECT, ARRAY_A, or ARRAY_N, which param: string $filter Optional. How to sanitize tag fields. Default 'raw'. return: WP_Term|array|WP_Error|null Tag data in type defined by $output parameter. since: 2.3.0 |
| clean_category_cache( $id ) X-Ref |
| Removes the category cache data based on ID. param: int $id Category ID since: 2.1.0 |
| _make_cat_compat( &$category ) X-Ref |
| Updates category structure to old pre-2.3 from new taxonomy structure. This function was added for the taxonomy support to update the new category structure with the old category one. This will maintain compatibility with plugins and themes which depend on the old key or property names. The parameter should only be passed a variable and not create the array or object inline to the parameter. The reason for this is that parameter is passed by reference and PHP will fail unless it has the variable. There is no return value, because everything is updated on the variable you pass to it. This is one of the features with using pass by reference in PHP. param: array|object|WP_Term $category Category row object or array. since: 2.3.0 since: 4.4.0 The `$category` parameter now also accepts a WP_Term object. |
| Generated: Sun Dec 22 01:00:02 2024 | Cross-referenced by PHPXref 0.7.1 |