Hphp Array Idx

:::info[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. :::

hphp_array_idx() returns the value at the given key in the given array or the given default value if it is not found

function hphp_array_idx(
  mixed $search,
  mixed $key,
  mixed $def,
): mixed;

An error will be raised if the search parameter is not an array.

Parameters

• mixed $search - An array with keys to check.
• mixed $key - Value to check.
• mixed $def - The value to return if key is not found in search.

Returns

• mixed - - Returns the value at 'key' in 'search' or 'def' if it is not found.