update_term_meta
update_term_meta ( $term_id, $meta_key, $meta_value, $prev_value = '' )
Parameters:- (int) term_id Term ID.
- (string) meta_key Metadata key.
- (mixed) meta_value Metadata value. Must be serializable if non-scalar.
- (mixed) prev_value Optional. Previous value to check before updating. If specified, only update existing metadata entries with this value. Otherwise, update all entries. Default empty.
Returns:- (int|bool|WP_Error) Meta ID if the key didn't exist. true on successful update, false on failure or if the value passed to the function is the same as the one that is already in the database. WP_Error when term_id is ambiguous between taxonomies.
Defined at: - Introduced in WordPress: 4.4.0
- Deprecated in WordPress: —
Description
Updates term metadata.Use the `$prev_value` parameter to differentiate between meta fields with the same key and term ID.
If the meta field for the term does not exist, it will be added.