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Interface: ExtendedPromiseInterface - X-Ref
| done(callable $onFulfilled = null, callable $onRejected = null, callable $onProgress = null) X-Ref |
| Consumes the promise's ultimate value if the promise fulfills, or handles the ultimate error. It will cause a fatal error if either `$onFulfilled` or `$onRejected` throw or return a rejected promise. Since the purpose of `done()` is consumption rather than transformation, `done()` always returns `null`. param: callable|null $onFulfilled param: callable|null $onRejected param: callable|null $onProgress This argument is deprecated and should not be used anymore. return: void |
| otherwise(callable $onRejected) X-Ref |
| Registers a rejection handler for promise. It is a shortcut for: ```php $promise->then(null, $onRejected); ``` Additionally, you can type hint the `$reason` argument of `$onRejected` to catch only specific errors. param: callable $onRejected return: ExtendedPromiseInterface |
| always(callable $onFulfilledOrRejected) X-Ref |
| Allows you to execute "cleanup" type tasks in a promise chain. It arranges for `$onFulfilledOrRejected` to be called, with no arguments, when the promise is either fulfilled or rejected. * If `$promise` fulfills, and `$onFulfilledOrRejected` returns successfully, `$newPromise` will fulfill with the same value as `$promise`. * If `$promise` fulfills, and `$onFulfilledOrRejected` throws or returns a rejected promise, `$newPromise` will reject with the thrown exception or rejected promise's reason. * If `$promise` rejects, and `$onFulfilledOrRejected` returns successfully, `$newPromise` will reject with the same reason as `$promise`. * If `$promise` rejects, and `$onFulfilledOrRejected` throws or returns a rejected promise, `$newPromise` will reject with the thrown exception or rejected promise's reason. `always()` behaves similarly to the synchronous finally statement. When combined with `otherwise()`, `always()` allows you to write code that is similar to the familiar synchronous catch/finally pair. Consider the following synchronous code: ```php try { return doSomething(); } catch(\Exception $e) { return handleError($e); } finally { cleanup(); } ``` Similar asynchronous code (with `doSomething()` that returns a promise) can be written: ```php return doSomething() ->otherwise('handleError') ->always('cleanup'); ``` param: callable $onFulfilledOrRejected return: ExtendedPromiseInterface |
| progress(callable $onProgress) X-Ref |
| Registers a handler for progress updates from promise. It is a shortcut for: ```php $promise->then(null, null, $onProgress); ``` param: callable $onProgress return: ExtendedPromiseInterface |
| Generated: Wed Nov 11 20:33:01 2020 | Cross-referenced by PHPXref 0.7.1 |