info( $message, [ 'source' => 'syntopia-pay' ] ); } /** * @param array $pairs */ public static function fields( array $pairs ): string { $parts = []; foreach ( $pairs as $key => $value ) { if ( null !== $value && '' !== $value ) { $parts[] = $key . '=' . $value; } } return implode( ' ', $parts ); } }