Attempt to resolve IP value database error

gistfile1.php

<?php

/**
 * Log handler
 * @param  string $message   sprintf-ready error message string
 * @param  array  $args      sprintf (and extra) arguments to use
 * @param  int    $object_id Target object id
 * @param  string $action    Action performed (stream_action)
 * @param  int    $user_id   User responsible for the action
 * @param  array  $contexts  Contexts of the action
 * @return void
 */
public function log( $connector, $message, $args, $object_id, $contexts, $user_id = null ) {
	if ( is_null( $user_id ) ) {
		$user_id = get_current_user_id();
	}

	$ip = filter_input( INPUT_SERVER, 'REMOTE_ADDR', FILTER_VALIDATE_IP );
	$ip = ( $ip ) ? $ip : null;

	$recordarr = array(
		'object_id' => $object_id,
		'author'    => $user_id,
		'created'   => current_time( 'mysql', 1 ),
		'summary'   => vsprintf( $message, $args ),
		'parent'    => self::$instance->prev_record,
		'connector' => $connector,
		'contexts'  => $contexts,
		'meta'      => $args,
		'ip'        => $ip,
	);

	$record_id = WP_Stream_DB::get_instance()->insert( $recordarr );

	return $record_id;
}