function PromiseInterface::catch

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.

@template TThrowable of \Throwable @template TRejected

Parameters

callable(TThrowable): (PromiseInterface<TRejected>|TRejected) $onRejected:

Return value

PromiseInterface<T|TRejected>

3 methods override PromiseInterface::catch()

FulfilledPromise::catch in vendor/react/promise/src/Internal/FulfilledPromise.php

Registers a rejection handler for promise. It is a shortcut for:

Promise::catch in vendor/react/promise/src/Promise.php

@template TThrowable of \Throwable @template TRejected

RejectedPromise::catch in vendor/react/promise/src/Internal/RejectedPromise.php

@template TThrowable of \Throwable @template TRejected

File

vendor/react/promise/src/PromiseInterface.php, line 57

Class

PromiseInterface

@template-covariant T

Namespace

React\Promise

Code

public function catch(callable $onRejected) : PromiseInterface;