interface EncoderInterface

ChainEncoder.php in drupal/core/vendor/symfony/serializer/Symfony/Component/Serializer/Encoder/ChainEncoder.php

JsonEncoder.php in drupal/core/modules/serialization/lib/Drupal/serialization/Encoder/JsonEncoder.php

Contains \Drupal\serialization\Encoder\JsonEncoder.

SerializationTestEncoder.php in drupal/core/modules/serialization/tests/serialization_test/lib/Drupal/serialization_test/SerializationTestEncoder.php

Contains \Drupal\serialization_test\SerializationTestEncoder.

Serializer.php in drupal/core/vendor/symfony/serializer/Symfony/Component/Serializer/Serializer.php

XmlEncoder.php in drupal/core/modules/serialization/lib/Drupal/serialization/Encoder/XmlEncoder.php

Contains \Drupal\serialization\Encoder\XmlEncoder.

interface EncoderInterface {

  /**
   * Encodes data into the given format
   *
   * @param mixed  $data   Data to encode
   * @param string $format Format name
   * @param array  $context options that normalizers/encoders have access to.
   *
   * @return scalar
   */
  public function encode($data, $format, array $context = array());

  /**
   * Checks whether the serializer can encode to given format
   *
   * @param string $format format name
   *
   * @return Boolean
   */
  public function supportsEncoding($format);

}