# yii2\extensions\psrbridge\emitter

> 2 classes, 2 enums of the yii2\extensions\psrbridge\emitter namespace.

[API reference](/docs/api/index.md) › [PSR bridge](/docs/extensions/psr-bridge/reference/index.md) › emitter

## Classes

| Class | Summary |
| --- | --- |
| [`ContentRange`](/docs/extensions/psr-bridge/reference/emitter/contentrange/index.md) final | Represents and parses HTTP Content-Range header values. |
| [`SapiEmitter`](/docs/extensions/psr-bridge/reference/emitter/sapiemitter/index.md) final | Emits PSR-7 responses through PHP SAPI. |

## Enums

| Enum | Summary |
| --- | --- |
| [`ContentRangeUnit`](/docs/extensions/psr-bridge/reference/emitter/contentrangeunit/index.md) | Defines supported units for HTTP Content-Range headers. |
| [`HttpNoBodyStatus`](/docs/extensions/psr-bridge/reference/emitter/httpnobodystatus/index.md) | Defines HTTP status codes that do not allow a response body. |