wp_ajax_add_link_category( string $action )

1040function wp_ajax_add_link_category( $action ) {1041	if ( empty( $action ) ) {1042		$action = 'add-link-category';1043	}1044 1045	check_ajax_referer( $action );1046 1047	$taxonomy_object = get_taxonomy( 'link_category' );1048 1049	if ( ! current_user_can( $taxonomy_object->cap->manage_terms ) ) {1050		wp_die( -1 );1051	}1052 1053	$names    = explode( ',', wp_unslash( $_POST['newcat'] ) );1054	$response = new WP_Ajax_Response();1055 1056	foreach ( $names as $category_name ) {1057		$category_name = trim( $category_name );1058		$slug          = sanitize_title( $category_name );1059 1060		if ( '' === $slug ) {1061			continue;1062		}1063 1064		$category_id = wp_insert_term( $category_name, 'link_category' );1065 1066		if ( ! $category_id || is_wp_error( $category_id ) ) {1067			continue;1068		} else {1069			$category_id = $category_id['term_id'];1070		}1071 1072		$category_name = esc_html( $category_name );1073 1074		$response->add(1075			array(1076				'what'     => 'link-category',1077				'id'       => $category_id,1078				'data'     => "<li id='link-category-$category_id'><label for='in-link-category-$category_id' class='selectit'><input value='" . esc_attr( $category_id ) . "' type='checkbox' checked='checked' name='link_category[]' id='in-link-category-$category_id'/> $category_name</label></li>",1079				'position' => -1,1080			)1081		);1082	}1083 1084	$response->send();1085}