X-Git-Url: https://scripts.mit.edu/gitweb/autoinstalls/wordpress.git/blobdiff_plain/177fd6fefd2e3d5a0ea6591c71d660cabdb3c1a4..refs/tags/wordpress-2.6.2:/wp-includes/category.php?ds=sidebyside diff --git a/wp-includes/category.php b/wp-includes/category.php index 193390dd..d97b72d2 100644 --- a/wp-includes/category.php +++ b/wp-includes/category.php @@ -1,5 +1,18 @@ 'category'); $args = wp_parse_args($args, $defaults); @@ -24,8 +51,28 @@ function &get_categories($args = '') { return $categories; } -// Retrieves category data given a category ID or category object. -// Handles category caching. +/** + * 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. + * + * The category will converted to maintain backwards compatibility. + * + * @since 2.1.0 + * @uses get_term() Used to get the category data from the taxonomy. + * + * @param int|object $category Category ID or Category row object + * @param string $output Optional. Constant OBJECT, ARRAY_A, or ARRAY_N + * @param string $filter Optional. Default is raw or no WordPress defined filter will applied. + * @return mixed Category data in type defined by $output parameter. + */ function &get_category($category, $output = OBJECT, $filter = 'raw') { $category = get_term($category, 'category', $output, $filter); if ( is_wp_error( $category ) ) @@ -36,6 +83,25 @@ function &get_category($category, $output = OBJECT, $filter = 'raw') { return $category; } +/** + * Retrieve 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. + * + * @since 2.1.0 + * + * @param string $category_path URL containing category slugs. + * @param bool $full_match Optional. Whether should match full path or not. + * @param string $output Optional. Constant OBJECT, ARRAY_A, or ARRAY_N + * @return null|object|array Null on failure. Type is based on $output value. + */ function get_category_by_path($category_path, $full_match = true, $output = OBJECT) { $category_path = rawurlencode(urldecode($category_path)); $category_path = str_replace('%2F', '/', $category_path); @@ -50,7 +116,7 @@ function get_category_by_path($category_path, $full_match = true, $output = OBJE $categories = get_terms('category', "get=all&slug=$leaf_path"); if ( empty($categories) ) - return NULL; + return null; foreach ($categories as $category) { $path = '/' . $leaf_path; @@ -70,9 +136,17 @@ function get_category_by_path($category_path, $full_match = true, $output = OBJE if ( ! $full_match ) return get_category($categories[0]->term_id, $output); - return NULL; + return null; } +/** + * Retrieve category object by category slug. + * + * @since 2.3.0 + * + * @param string $slug The category slug. + * @return object Category data object + */ function get_category_by_slug( $slug ) { $category = get_term_by('slug', $slug, 'category'); if ( $category ) @@ -81,7 +155,15 @@ function get_category_by_slug( $slug ) { return $category; } -// Get the ID of a category from its name + +/** + * Retrieve the ID of a category from its name. + * + * @since 1.0.0 + * + * @param string $cat_name Optional. Default is 'General' and can be any category name. + * @return int 0, if failure and ID of category on success. + */ function get_cat_ID($cat_name='General') { $cat = get_term_by('name', $cat_name, 'category'); if ($cat) @@ -89,18 +171,49 @@ function get_cat_ID($cat_name='General') { return 0; } -// Deprecate + +/** + * Retrieve the category name by the category ID. + * + * @since 0.71 + * @deprecated Use get_cat_name() + * @see get_cat_name() get_catname() is deprecated in favor of get_cat_name(). + * + * @param int $cat_ID Category ID + * @return string category name + */ function get_catname($cat_ID) { return get_cat_name($cat_ID); } -// Get the name of a category from its ID + +/** + * Retrieve the name of a category from its ID. + * + * @since 1.0.0 + * + * @param int $cat_id Category ID + * @return string Category name + */ function get_cat_name($cat_id) { $cat_id = (int) $cat_id; $category = &get_category($cat_id); return $category->name; } + +/** + * Check 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. + * + * @since 2.1.0 + * + * @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 $cat1 + */ function cat_is_ancestor_of($cat1, $cat2) { if ( is_int($cat1) ) $cat1 = & get_category($cat1); @@ -116,16 +229,51 @@ function cat_is_ancestor_of($cat1, $cat2) { return cat_is_ancestor_of($cat1, get_category($cat2->parent)); } + +/** + * Sanitizes category data based on context. + * + * @since 2.3.0 + * @uses sanitize_term() See this function for what context are supported. + * + * @param object|array $category Category data + * @param string $context Optional. Default is 'display'. + * @return object|array Same type as $category with sanitized data for safe use. + */ function sanitize_category($category, $context = 'display') { return sanitize_term($category, 'category', $context); } + +/** + * Sanitizes data in single category key field. + * + * @since 2.3.0 + * @uses sanitize_term_field() See function for more details. + * + * @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 $value has been sanitized. + */ function sanitize_category_field($field, $value, $cat_id, $context) { return sanitize_term_field($field, $value, $cat_id, 'category', $context); } -// Tags +/* Tags */ + +/** + * Retrieves all post tags. + * + * @since 2.3.0 + * @see get_terms() For list of arguments to pass. + * @uses apply_filters() Calls 'get_tags' hook on array of tags and with $args. + * + * @param string|array $args Tag arguments to use when retrieving tags. + * @return array List of tags. + */ function &get_tags($args = '') { $tags = get_terms('post_tag', $args); @@ -136,26 +284,82 @@ function &get_tags($args = '') { return $tags; } + +/** + * Retrieve 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 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 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. + * + * @since 2.3.0 + * + * @param int|object $tag + * @param string $output Optional. Constant OBJECT, ARRAY_A, or ARRAY_N + * @param string $filter Optional. Default is raw or no WordPress defined filter will applied. + * @return object|array Return type based on $output value. + */ function &get_tag($tag, $output = OBJECT, $filter = 'raw') { return get_term($tag, 'post_tag', $output, $filter); } -// -// Cache -// +/* Cache */ + + +/** + * Update the categories cache. + * + * This function does not appear to be used anymore or does not appear to be + * needed. It might be a legacy function left over from when there was a need + * for updating the category cache. + * + * @since 1.5.0 + * + * @return bool Always return True + */ function update_category_cache() { return true; } + +/** + * Remove the category cache data based on ID. + * + * @since 2.1.0 + * @uses clean_term_cache() Clears the cache for the category based on ID + * + * @param int $id Category ID + */ function clean_category_cache($id) { clean_term_cache($id, 'category'); } -// -// Private helpers -// +/** + * Update 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. + * + * @since 2.3.0 + * @access private + * + * @param array|object $category Category Row object or array + */ function _make_cat_compat( &$category) { if ( is_object($category) ) { $category->cat_ID = &$category->term_id; @@ -174,4 +378,5 @@ function _make_cat_compat( &$category) { } } + ?>