/**
* 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(fopen('php://temp', 'r+'));
$body->write($this->jsonEncode($data, $encodingOptions));
$body->rewind();
parent::__construct($body, $status, []);
$headers = $headers + ['Content-Type' => 'application/json'];
foreach ($headers as $name => $value) {
$this->withHeader($name, $value);
}
}
/**
* Create the message body.
*
* @param string|StreamInterface $html
* @return StreamInterface
* @throws InvalidArgumentException if $html is neither a string or stream.
*/
private function createBody($html)
{
if ($html instanceof StreamInterface) {
return $html;
}
if (!is_string($html)) {
throw new InvalidArgumentException(sprintf('Invalid content (%s) provided to %s', is_object($html) ? get_class($html) : gettype($html), __CLASS__));
}
$body = new Stream(fopen('php://temp', 'r+'));
$body->write($html);
$body->rewind();
return $body;
}
