Symfony Polyfill / Io / Poll

This component provides the Io\Poll API added to PHP 8.6 core, for PHP >= 8.1:

• Io\Poll\Context, Io\Poll\Watcher and StreamPollHandle
• Io\Poll\Backend and Io\Poll\Event enums
• Io\IoException and the Io\Poll\*Exception hierarchy

The polyfill is backed by stream_select(), so only the Poll backend is available and edge-triggering is not supported. Event detection follows the semantics of the native poll backend as closely as select() allows: Event::Error is only reported for connection resets, Event::ReadHangUp is never reported, and a TCP half-close reports Read|HangUp where native reports plain Read. The phpt tests of the native implementation, borrowed from php-src, run against the polyfill as part of the test suite.

Context::wait() takes its timeout as a Time\Duration. That class is not required to call wait() without a timeout; install symfony/polyfill-time to build one on PHP < 8.6.

More information can be found in the main Polyfill README.

License

This library is released under the MIT license.