heapgraph_node_in_edges

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.

Get an array of incoming edges to a specific node from the heap graph

namespace HH;

function heapgraph_node_in_edges(
  resource $heapgraph,
  int $index,
): varray<darray<string, mixed>>;

Parameters

• resource $heapgraph - The resource obtained with heapgraph_create
• int $index - The node index

Returns

• array<array<string, - mixed>> The incoming edges See documentation for heapgraph_edge() about the "edge" array passed to $callback