AnsPress_Upgrader::migrate_category_data()

	public function migrate_category_data() {
		global $wpdb;

		$terms = $wpdb->get_results( "SELECT t.*, tt.* FROM $wpdb->terms AS t INNER JOIN $wpdb->term_taxonomy AS tt ON t.term_id = tt.term_id WHERE tt.taxonomy IN ('question_category') ORDER BY t.name ASC" ); // @codingStandardsIgnoreLine.

		foreach ( (array) $terms as $term ) {
			$term_meta = get_option( 'ap_cat_' . $term->term_id );

			if ( isset( $term_meta['ap_image'] ) ) {
				$term_meta['image'] = $term_meta['ap_image'];
				unset( $term_meta['ap_image'] );
			}

			if ( isset( $term_meta['ap_icon'] ) ) {
				$term_meta['icon'] = $term_meta['ap_icon'];
				unset( $term_meta['ap_icon'] );
			}

			if ( isset( $term_meta['ap_color'] ) ) {
				$term_meta['color'] = $term_meta['ap_color'];
				unset( $term_meta['ap_color'] );
			}

			update_term_meta( $term->term_id, 'ap_category', $term_meta );
			delete_option( 'ap_cat_' . $term->term_id );
		}

		print( esc_attr__( 'Categories data migrated', 'anspress-question-answer' ) );
	}