add_post_meta
add_post_meta ( $post_id, $meta_key, $meta_value, $unique = false )
Parameters:- (int) $post_id Post ID.
- (string) $meta_key Metadata name.
- (mixed) $meta_value Metadata value. Must be serializable if non-scalar.
- (bool) $unique Optional. Whether the same key should not be added. Default false.
Returns:- (int|false) Meta ID on success, false on failure.
Defined at: - Introduced in WordPress: 1.5.0
- Deprecated in WordPress: —
Description
Adds a meta field to the given post.
Post meta data is called "Custom Fields" on the Administration Screen.