update_metadata_by_mid()

update_metadata_by_mid() — Updates metadata by meta ID.

Inputs: $meta_type (string): Type of object metadata is for. Accepts ‘blog’, ‘post’, ‘comment’, ‘term’, ‘user’, or any other object type with an associated meta table. $meta_id (int): ID for a specific meta row. $meta_value (string): Metadata value. Must be serializable if non-scalar. $meta_key (string|false): Optional. You can provide a meta key to update it. Default false.

Returns bool: True on successful update, false on failure.