Skip to main content

set_frame_metadata

Note

This is a point-in-time snapshot of the API documentation from January 2026. Going forward, we will not be maintaining a public copy of these references, and recommend users to refer to the built-in signature helpers available in the Hack LSP instead for complete and up-to-date information.

Attach metadata to the caller's stack frame

namespace HH;

function set_frame_metadata(
  mixed $metadata,
): void;

The metadata can be retrieved using debug_backtrace(DEBUG_BACKTRACE_PROVIDE_METADATA).

Parameters​

  • mixed $metadata

Returns​

  • void