<?php use JsonApiPhp\JsonApi\Attribute ; use JsonApiPhp\JsonApi\DataDocument ; use JsonApiPhp\JsonApi\Link\RelatedLink ; use JsonApiPhp\JsonApi\Link\SelfLink ; use JsonApiPhp\JsonApi\ResourceIdentifier ; use JsonApiPhp\JsonApi\ResourceObject ; use JsonApiPhp\JsonApi\ToOne ; echo json_encode ( new DataDocument ( new ResourceObject ( 'articles' , '1' , new Attribute ( 'title' , 'Rails is Omakase' ), new ToOne ( 'author' , new ResourceIdentifier ( 'author' , '9' ), new SelfLink ( '/articles/1/relationships/author' ), new RelatedLink ( '/articles/1/author' ) ) ) ), JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES );