Question

clean_term_cache( int|array $ids,  string $taxonomy = '',  bool $clean_taxonomy = true )

Will remove all of the term ids from the cache.

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description

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参数

$ids

(int|array) (Required) Single or list of Term IDs.

$taxonomy

(string) (Optional) Can be empty and will assume tt_ids, else will use for context.

Default value: ''

$clean_taxonomy

(bool) (Optional) Whether to clean taxonomy wide caches (true), or just individual term object caches (false).

Default value: true

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源代码

File: wp-includes/taxonomy.php

function clean_term_cache($ids, $taxonomy = '', $clean_taxonomy = true) {
	global $wpdb, $_wp_suspend_cache_invalidation;

	if ( ! empty( $_wp_suspend_cache_invalidation ) ) {
		return;
	}

	if ( !is_array($ids) )
		$ids = array($ids);

	$taxonomies = array();
	// If no taxonomy, assume tt_ids.
	if ( empty($taxonomy) ) {
		$tt_ids = array_map('intval', $ids);
		$tt_ids = implode(', ', $tt_ids);
		$terms = $wpdb->get_results("SELECT term_id, taxonomy FROM $wpdb->term_taxonomy WHERE term_taxonomy_id IN ($tt_ids)");
		$ids = array();
		foreach ( (array) $terms as $term ) {
			$taxonomies[] = $term->taxonomy;
			$ids[] = $term->term_id;
			wp_cache_delete( $term->term_id, 'terms' );
		}
		$taxonomies = array_unique($taxonomies);
	} else {
		$taxonomies = array($taxonomy);
		foreach ( $taxonomies as $taxonomy ) {
			foreach ( $ids as $id ) {
				wp_cache_delete( $id, 'terms' );
			}
		}
	}

	foreach ( $taxonomies as $taxonomy ) {
		if ( $clean_taxonomy ) {
			wp_cache_delete('all_ids', $taxonomy);
			wp_cache_delete('get', $taxonomy);
			delete_option("{$taxonomy}_children");
			// Regenerate {$taxonomy}_children
			_get_term_hierarchy($taxonomy);
		}

		/**
		 * Fires once after each taxonomy's term cache has been cleaned.
		 *
		 * @since 2.5.0
		 * @since 4.5.0 Added the `$clean_taxonomy` parameter.
		 *
		 * @param array  $ids            An array of term IDs.
		 * @param string $taxonomy       Taxonomy slug.
		 * @param bool   $clean_taxonomy Whether or not to clean taxonomy-wide caches
		 */
		do_action( 'clean_term_cache', $ids, $taxonomy, $clean_taxonomy );
	}

	wp_cache_set( 'last_changed', microtime(), 'terms' );
}

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更新日志

Version	description
2.3.0	Introduced.

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相关函数

Uses

• wp-includes/cache.php: wp_cache_delete()
• wp-includes/cache.php: wp_cache_set()
• wp-includes/taxonomy.php: clean_term_cache
• wp-includes/plugin.php: do_action()
• wp-includes/option.php: delete_option()
• wp-includes/wp-db.php: wpdb::get_results()
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Used By

• wp-includes/category.php: clean_category_cache()
• wp-includes/taxonomy.php: wp_update_term_count_now()
• wp-includes/taxonomy.php: wp_update_term()
• wp-includes/taxonomy.php: wp_insert_term()
• wp-includes/taxonomy.php: wp_delete_term()
• wp-includes/ms-functions.php: global_terms()
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User Contributed Notes