function bp_notifications_sort_order_form() {

	// Setup local variables.
	$orders   = array( 'DESC', 'ASC' );
	$selected = 'DESC';

	// Check for a custom sort_order.
	if ( !empty( $_REQUEST['sort_order'] ) ) {
		if ( in_array( $_REQUEST['sort_order'], $orders ) ) {
			$selected = $_REQUEST['sort_order'];
		}
	} ?>

	<form action="" method="get" id="notifications-sort-order">
		<label for="notifications-sort-order-list"><?php esc_html_e( 'Order By:', 'buddypress' ); ?></label>

		<select id="notifications-sort-order-list" name="sort_order" onchange="this.form.submit();">
			<option value="DESC" <?php selected( $selected, 'DESC' ); ?>><?php _e( 'Newest First', 'buddypress' ); ?></option>
			<option value="ASC"  <?php selected( $selected, 'ASC'  ); ?>><?php _e( 'Oldest First', 'buddypress' ); ?></option>
		</select>

		<noscript>
			<input id="submit" type="submit" name="form-submit" class="submit" value="<?php esc_attr_e( 'Go', 'buddypress' ); ?>" />
		</noscript>
	</form>

<?php
}