* JSON_HEX_TAG | JSON_HEX_APOS | JSON_HEX_AMP | JSON_HEX_QUOT | JSON_UNESCAPED_SLASHES * * * @const int */ const DEFAULT_JSON_FLAGS = 79; /** * Create a JSON response with the given data. * * Default JSON encoding is performed with the following options, which * produces RFC4627-compliant JSON, capable of embedding into HTML. * * - JSON_HEX_TAG * - JSON_HEX_APOS * - JSON_HEX_AMP * - JSON_HEX_QUOT * - JSON_UNESCAPED_SLASHES * * @param mixed $data Data to convert to JSON. * @param int $status Integer status code for the response; 200 by default. * @param array $headers Array of headers to use at initialization. * @param int $encodingOptions JSON encoding options to use. * @throws InvalidArgumentException if unable to encode the $data to JSON. */ public function __construct( $data, $status = 200, array $headers = [], $encodingOptions = self::DEFAULT_JSON_FLAGS ) { $body = new Stream('php://temp', 'wb+'); $body->write($this->jsonEncode($data, $encodingOptions)); $body->rewind(); $headers = $this->injectContentType('application/json', $headers); parent::__construct($body, $status, $headers); } /** * Encode the provided data to JSON. * * @param mixed $data * @param int $encodingOptions * @return string * @throws InvalidArgumentException if unable to encode the $data to JSON. */ private function jsonEncode($data, $encodingOptions) { if (is_resource($data)) { throw new InvalidArgumentException('Cannot JSON encode resources'); } // Clear json_last_error() json_encode(null); $json = json_encode($data, $encodingOptions); if (JSON_ERROR_NONE !== json_last_error()) { throw new InvalidArgumentException(sprintf( 'Unable to encode data to JSON in %s: %s', __CLASS__, json_last_error_msg() )); } return $json; } }