function bp_activity_post_update( $args = '' ) {

	$r = wp_parse_args( $args, array(
		'content'    => false,
		'user_id'    => bp_loggedin_user_id(),
		'error_type' => 'bool',
	) );

	if ( empty( $r['content'] ) || !strlen( trim( $r['content'] ) ) ) {
		return false;
	}

	if ( bp_is_user_inactive( $r['user_id'] ) ) {
		return false;
	}

	// Record this on the user's profile.
	$activity_content = $r['content'];
	$primary_link     = bp_core_get_userlink( $r['user_id'], false, true );

	/**
	 * Filters the new activity content for current activity item.
	 *
	 * @since 1.2.0
	 *
	 * @param string $activity_content Activity content posted by user.
	 */
	$add_content = apply_filters( 'bp_activity_new_update_content', $activity_content );

	/**
	 * Filters the activity primary link for current activity item.
	 *
	 * @since 1.2.0
	 *
	 * @param string $primary_link Link to the profile for the user who posted the activity.
	 */
	$add_primary_link = apply_filters( 'bp_activity_new_update_primary_link', $primary_link );

	// Now write the values.
	$activity_id = bp_activity_add( array(
		'user_id'      => $r['user_id'],
		'content'      => $add_content,
		'primary_link' => $add_primary_link,
		'component'    => buddypress()->activity->id,
		'type'         => 'activity_update',
		'error_type'   => $r['error_type']
	) );

	// Bail on failure.
	if ( false === $activity_id || is_wp_error( $activity_id ) ) {
		return $activity_id;
	}

	/**
	 * Filters the latest update content for the activity item.
	 *
	 * @since 1.6.0
	 *
	 * @param string $r                Content of the activity update.
	 * @param string $activity_content Content of the activity update.
	 */
	$activity_content = apply_filters( 'bp_activity_latest_update_content', $r['content'], $activity_content );

	// Add this update to the "latest update" usermeta so it can be fetched anywhere.
	bp_update_user_meta( bp_loggedin_user_id(), 'bp_latest_update', array(
		'id'      => $activity_id,
		'content' => $activity_content
	) );

	/**
	 * Fires at the end of an activity post update, before returning the updated activity item ID.
	 *
	 * @since 1.2.0
	 *
	 * @param string $content     Content of the activity post update.
	 * @param int    $user_id     ID of the user posting the activity update.
	 * @param int    $activity_id ID of the activity item being updated.
	 */
	do_action( 'bp_activity_posted_update', $r['content'], $r['user_id'], $activity_id );

	return $activity_id;
}