HH\Lib\Experimental\IO\request_error

Return the error output handle for the current request

namespace HH\Lib\Experimental\IO;

function request_error(): ?CloseableWriteHandle;

This is usually only available for CLI scripts; it will return null in most other contexts, including HTTP requests.

For a throwing version, use request_error(x).

In CLI mode, this is usually the process STDERR.

Returns

  • ?CloseableWriteHandle